ErrLookup › bytedance/deer-flow

bytedance/deer-flow

An open-source long-horizon SuperAgent harness that researches, codes, and creates. With the help of sandboxes, memories, tools, skill, subagents and message gateway, it handles different levels of tasks that could take minutes to hours. · Python · 1,035 source files

Analyzed at 1dd6ba1acb on 2026-08-14. 473 documented errors.

Code / Message	Type	Severity	Tags
Failed to load agents: ${res.statusText}	exception	error	mem0, configuration, security, tls, validation
Agent '${name}' not found	exception	error	mem0, configuration, environment, credentials, validation
`agents_api.enabled` err.detail	exception	error	mem0, runtime, network, failure-policy, memory
Failed to create agent: ${res.statusText}	exception	error	mem0, runtime, network, failure-policy, memory
Failed to update agent: ${res.statusText}	exception	error	openviking, configuration, migration, breaking-change, auth
Failed to delete agent: ${res.statusText}	exception	error	openviking, configuration, migration, breaking-change, http-client
`backend_unreachable` Could not reach the DeerFlow backend.	exception	error	openviking, configuration, validation, environment
`request_failed` Failed to check agent name: ${res.statusText}	exception	error	openviking, configuration, security, tls, validation
Unable to recover SSE history after ${recoveryAttempts} atte	exception	error	openviking, configuration, validation, auth
Failed to submit feedback: ${res.status}	exception	error	openviking, configuration, validation, identifiers
Failed to delete feedback: ${res.status}	exception	error	openviking, configuration, validation, identifiers, reserved-prefix
Failed to load features: ${res.statusText}	exception	error	openviking, configuration, validation, timeout
HTTP ${response.status}: ${response.statusText}	exception	error	openviking, configuration, validation, retrieval
Failed to load MCP configuration	exception	error	mcp, config, http, frontend
Failed to update MCP configuration	exception	error	mcp, config, validation, http, frontend
Failed to update MCP server	exception	error	mcp, config, http, frontend
HTTP ${response.status}: ${response.statusText}	exception	error	artifacts, concurrency, http, sha256, frontend
Failed to load artifact: ${response.status}	exception	error	artifacts, range-request, http, frontend
setup-status failed: ${response.status}	exception	critical	auth, setup, http, routing, frontend
detailMessage ?? `${fallbackMessage}: ${response.statusText}	exception	warning	memory, auth, http, frontend
Failed to create side conversation.	exception	error	sidecar, threads, http, frontend
HTTP ${response.status}: ${response.statusText}	exception	error	skills, http, frontend
Failed to load suggestions config: ${response.statusText}	exception	info	suggestions, config, http, fallback, frontend
Failed to fetch subtask steps: ${res.status}	exception	warning	tasks, events, pagination, http, frontend
Failed to load thread token usage.	exception	info	threads, token-usage, http, frontend
Failed to branch conversation.	exception	error	threads, branching, http, frontend
Failed to update conversation.	exception	error	threads, metadata, http, frontend
Failed to compact context.	exception	error	threads, compaction, http, frontend
Thread history returned an invalid response.	validation	error	threads, validation, schema, type-guard, frontend
Thread history returned a row with an invalid seq.	validation	error	validation, threads, pagination, data-integrity
Thread history returned duplicate seq values.	validation	error	validation, threads, data-integrity, pagination
Thread history returned an invalid next_before_seq cursor.	validation	error	validation, pagination, threads, contract-mismatch
Failed to prepare ${failedConversions} attachment(s) for upl	exception	error	attachments, upload, frontend, validation
Thread is not ready for file upload.	exception	error	attachments, upload, race-condition, threads, frontend
Request failed.	exception	error	api, regenerate, network, frontend
Failed to load thread history.	exception	error	api, threads, history, network, react-query, frontend
Failed to delete local thread data.	exception	error	threads, delete, api, idempotency, frontend
Failed to load demo thread ${threadId}	exception	warning	demo, static-assets, frontend, threads
Upload failed	exception	error	upload, attachments, api, limits, frontend
Failed to load upload limits	exception	warning	upload, limits, api, frontend
Failed to list uploaded files	exception	warning	upload, api, files, frontend
Failed to delete file	exception	warning	upload, delete, api, idempotency, frontend
Failed to load workspace changes.	exception	warning	api, workspace-changes, runs, network, frontend
HTTP ${response.status}: ${text}	http	error	skills, chart, http, external-service, node
Unknown error	exception	error	skills, chart, external-service, validation, node
result.message	exception	critical	config, bootstrap, gateway, render-crash, frontend
result.message	exception	critical	config, nextjs, server-render, gateway
HTTP ${response.status}	http	error	network, http, goal, composer
No context selected	exception	warning	sidecar, ui, react, validation
channels.buzz.relay_url must be a ws:// or wss:// URL	validation	error	config, buzz, websocket, validation
The Buzz channel requires the 'buzz' extra: run `uv sync --e	exception	error	buzz, dependencies, nostr, python
not bech32: {value!r}	validation	error	buzz, nostr, bech32, validation
expected {expected_hrp!r} bech32, got {hrp!r}	validation	error	buzz, nostr, bech32, validation
invalid bech32 character in {value!r}	validation	error	buzz, nostr, bech32, validation
bad bech32 checksum in {value!r}	validation	error	buzz, nostr, bech32, validation
expected 32-byte payload in {value!r}	validation	error	buzz, nostr, bech32, validation
expected 64-hex or {bech_hrp}1... value	validation	error	buzz, nostr, validation, config
expected exactly 32 bytes	validation	error	buzz, nostr, validation, config
Channel session assistant_id is empty. Use 'lead_agent' or a	validation	error	channels, config, validation
Invalid channel session assistant_id {raw_value!r}. Use 'lea	validation	error	channels, config, validation
Failed to resolve slash skill command. Please check the skil	exception	error	skills, channels, config, im
Failed to load configuration during gateway startup: {e}	console	critical	gateway, config, startup, critical
Failed to read JWT secret from {secret_file}. Set AUTH_JWT_S	console	critical	auth, jwt, permissions, deployment
Failed to persist JWT secret to {secret_file}. Set AUTH_JWT_	console	critical	auth, jwt, permissions, deployment, persistence
Your email could not be verified by the identity provider. P	http	error	auth, oidc, sso, http-403, user-provisioning
The identity provider did not provide an email address.	http	error	auth, oidc, sso, http-403, user-provisioning
Your email domain is not allowed. Please use an approved ema	http	error	auth, oidc, sso, http-403, allow-list, user-provisioning
An account with this email already exists. Contact your admi	http	error	auth, oidc, sso, http-409, account-takeover-guard, user-provisioning
Automatic account creation is disabled. Contact your adminis	http	error	auth, oidc, sso, http-403, user-provisioning
Authentication required	http	error	auth, http-401, authorization, gateway
Permission denied: {resource}:{action}	http	error	auth, http-403, authorization, permissions, rbac, gateway
Thread {thread_id} not found	http	error	auth, http-404, authorization, ownership, threads, gateway
scheduler.multi_instance=true requires database.backend='pos	console	critical	config, startup, scheduler, postgres, system-exit, gateway
scheduler.multi_instance=true requires run_events.backend='d	console	critical	config, startup, scheduler, run-events, system-exit, gateway
scheduler.multi_instance=true requires run_ownership.heartbe	console	critical	config, startup, scheduler, run-ownership, heartbeat, system-exit, gateway
GATEWAY_WORKERS={workers} cannot run with scheduler.enabled=	console	critical	config, startup, scheduler, workers, scaling, system-exit, gateway
GATEWAY_WORKERS={workers} cannot enable agentic browser tool	console	critical	config, startup, browser-tools, workers, scaling, system-exit, gateway
GATEWAY_WORKERS={workers} requires database.backend='postgre	console	critical	config, startup, postgres, sqlite, workers, system-exit, gateway
GATEWAY_WORKERS={workers} requires run_events.backend='db',	console	critical	config, startup, run-events, workers, exactly-once, system-exit, gateway
GATEWAY_WORKERS={workers} requires run_ownership.heartbeat_e	console	critical	config, startup, run-ownership, heartbeat, workers, system-exit, gateway
agent_storage.backend='db' requires database.backend to be '	console	critical	config, startup, agent-storage, database, system-exit, gateway
Configuration not available	http	error	config, yaml, http-503, gateway, hot-reload
{label} not available	http	error	http-503, lifespan, startup, dependency-injection, gateway
Thread metadata store not available	http	error	http-503, threads, persistence, lifespan, gateway
Scheduled task repo not available	http	error	http-503, scheduler, scheduled-tasks, config, gateway
Scheduled task run repo not available	http	error	http-503, scheduler, run-history, persistence, gateway
Scheduled task service not available	http	error	http-503, scheduler, service, config, gateway
MCP task repo not available	http	error	http-503, mcp, tasks, persistence, lifespan, gateway
MCP task service not available	http	error	http-503, mcp, service, persistence, gateway
`NOT_AUTHENTICATED` Not authenticated	http	error	auth, http-401, cookies, session, gateway
Token error: {payload.value}	http	error	auth, http-401, jwt, token-expiry, secret-rotation
`USER_NOT_FOUND` User not found	http	error	auth, http-401, user-store, jwt, gateway
`TOKEN_INVALID` Token revoked (password changed)	http	error	auth, http-401, token-revocation, password-change, jwt
{detail}	http	error	auth, http-403, authorization, admin, roles
GITHUB_APP_ID is not set	exception	error	github-app, environment-variables, configuration, auth, integration
GITHUB_APP_ID={raw!r} is not an integer	exception	error	github-app, environment-variables, misconfiguration, validation
Neither GITHUB_APP_PRIVATE_KEY nor GITHUB_APP_PRIVATE_KEY_PA	exception	error	github-app, private-key, environment-variables, secrets, configuration
GITHUB_APP_PRIVATE_KEY_PATH points to nonexistent file: {p}	exception	error	github-app, file-not-found, secrets, docker, kubernetes
Failed to mint installation token (status={resp.status_code}	exception	error	github-app, installation-token, clock-skew, http-api, retry
CSRF token missing. Include X-CSRF-Token header.	http	error	csrf, http-403, security, langgraph, cookies, headers
CSRF token mismatch.	http	error	csrf, http-403, security, session-sync, cookies
Not authenticated	http	error	auth, http-401, cookies, langgraph
Invalid token	http	error	auth, http-401, jwt, token-expiry
User not found	http	error	auth, http-401, user-management, stale-cookie
Token revoked (password changed)	http	error	auth, http-401, password-change, session-invalidation
{e}	http	error	filesystem, path-traversal, http-403, http-400, validation
Invalid agent name '{name}'. Must match ^[A-Za-z0-9-]+$ (let	http	error	validation, http-422, agents, slug
Custom-agent management API is disabled. Set agents_api.enab	http	error	config, http-403, feature-flag, agents
Unknown model '{model}'. Use a model name defined under `mod	http	error	validation, http-422, config, models, agents
Failed to list agents: {str(e)}	http	error	http-500, agents, filesystem, persistence
Agent '{name}' not found	http	warning	http-404, agents, user-isolation, not-found
Failed to get agent: {str(e)}	http	error	http-500, agents, corrupt-config, filesystem
Agent '{normalized_name}' already exists	http	warning	http-409, agents, conflict, case-insensitive
Failed to create agent: {str(e)}	http	error	http-500, agents, permissions, persistence
Agent '{name}' only exists in the legacy shared layout and i	http	error	http-409, agents, migration, legacy-layout, user-isolation
Failed to update agent: {str(e)}	http	error	http-500, agents, update, filesystem, persistence
Failed to read user profile: {str(e)}	http	error	http-500, user-profile, filesystem, encoding
Failed to update user profile: {str(e)}	http	error	http-500, user-profile, permissions, filesystem
Failed to delete agent: {str(e)}	http	error	http-500, agents, delete, permissions
Agent '{name}' only exists in the legacy shared layout and i	http	error	http-409, agents, migration, legacy-layout, delete
Directory for '{name}' contains memory data but is not a cus	http	warning	api, agents, data-preservation, http-409, memory
Only files in /mnt/user-data/outputs can be edited	http	error	api, artifacts, path-validation, http-400, sandbox
Skill archives cannot be edited in the artifacts panel	http	warning	api, artifacts, skills, http-415, zip
Artifact not found: {path}	http	error	api, artifacts, not-found, http-404, concurrency
Symlinked artifacts cannot be edited	http	warning	api, artifacts, symlink, http-415, filesystem
Path is not a file: {path}	http	error	api, artifacts, path-validation, http-400, filesystem
Artifact is too large to edit	http	warning	api, artifacts, size-limit, http-413, limits
Binary artifacts cannot be edited	http	warning	api, artifacts, binary, http-415, encoding
Only UTF-8 text artifacts can be edited	http	warning	api, artifacts, encoding, http-415, utf-8
Artifact changed since it was opened	http	error	api, artifacts, optimistic-concurrency, http-412, etag
Binary content cannot be saved as an artifact	http	error	api, artifacts, binary, http-415, input-validation
Skill archive member is too large to preview	http	warning	api, artifacts, skills, zip, http-413, limits
Skill file not found: {skill_file_path}	http	error	api, artifacts, skills, not-found, http-404
Path is not a file: {skill_file_path}	http	error	api, artifacts, skills, path-validation, http-400
File '{internal_path}' not found in skill archive	http	error	api, artifacts, skills, zip, not-found, http-404
Thread has a run in flight. Save after the run finishes.	http	error	artifacts, http-409, concurrency, threads
Failed to update artifact	http	error	artifacts, http-500, filesystem, sandbox, rollback
Assistant {assistant_id} not found	http	error	assistants, http-404, langgraph-compat, api
Password is too common; choose a stronger password.	validation	warning	auth, http-422, validation, password
Too many login attempts. Try again later.	http	warning	auth, http-429, rate-limit, login
`invalid_credentials` Incorrect email or password	http	error	auth, http-401, login, invalid-credentials
`registration_disabled` Self-registration is disabled on this deployment	http	warning	auth, http-403, registration, config
`email_already_exists` Email already registered	http	warning	auth, http-400, registration, duplicate-email
`system_already_initialized` System already initialized	http	warning	auth, http-409, bootstrap, admin
SSO authentication is not enabled	http	warning	auth, http-404, oidc, sso, config
Invalid provider ID	http	warning	auth, http-400, oidc, validation, provider
Unknown SSO provider: {provider}	http	error	sso, oidc, auth, config, http-400
Missing code or state parameter	http	warning	sso, oidc, validation, http-400, proxy
Browser automation is not enabled	http	error	browser, config, feature-flag, http-404
URL is required	http	warning	browser, validation, http-400
Authentication required	http	error	auth, channels, http-401
Unknown channel provider	http	warning	channels, validation, http-404, provider
Too many pending channel connection codes. Wait for existing	http	warning	channels, rate-limit, http-429, throttling
Missing required channel configuration: {', '.join(missing)}	http	error
Channel connections are disabled	http	error
Channel connection not found	http	error
Channel provider is not enabled	http	error
Failed to stop {display_name} channel. Try again.	http	error
{unavailable_reason}	http	error
Channel provider is not configured	http	error
Failed to start {display_name} channel. Check the values and	http	error
Channel service is not running	http	error
Console requires a SQL database backend; set database.backen	http	error
rating must be +1 or -1	http	error
Run {run_id} not found	http	error
Run {run_id} not found in thread {thread_id}	http	error
No feedback found for this run	http	info	http-404, feedback, idempotency, rest-api
Feedback {feedback_id} not found	http	info	http-404, feedback, rest-api, idempotency
Feedback {feedback_id} not found in run {run_id}	http	error	http-404, feedback, resource-mismatch, rest-api
Webhook signature verification not configured. Set {_SECRET_	http	error	http-503, webhooks, configuration, secrets, github
Invalid or missing X-Hub-Signature-256	http	error	http-401, webhooks, hmac, signature, github
Missing X-GitHub-Event header	http	warning	http-400, webhooks, headers, proxy, github
Invalid JSON body	http	warning	http-400, webhooks, json, content-type, github
fan-out failed for delivery {x_github_delivery!r}: {exc!r}	http	error	http-503, webhooks, fan-out, message-bus, retryable
Input polishing is disabled	http	warning	http-404, feature-flag, configuration, input-polish
Input text is required	http	warning	http-400, validation, input-polish, empty-input
Input text exceeds {max_chars} characters	http	warning	http-400, validation, input-polish, length-limit
Failed to polish input	http	error	http-503, llm, upstream-failure, input-polish, retryable
Failed to get Lark integration status.	http	error	http-500, integrations, lark, feishu, status-check
{str(e)}	http	error	http-404, integrations, lark, install, missing-file
Failed to install Lark integration.	http	error	lark, feishu, integration, http-500, install, gateway
str(e)	http	error	lark, feishu, http-504, network, egress, timeout
Failed to start Lark connection setup.	http	error	lark, feishu, http-500, gateway, network, filesystem
Failed to complete Lark connection setup.	http	error	lark, feishu, http-500, gateway, filesystem, credentials
Failed to switch Lark app credentials.	http	error	lark, feishu, http-500, credentials, gateway, cli
Failed to start Lark authorization.	http	error	lark, feishu, http-500, auth, gateway, permissions
Failed to complete Lark authorization.	http	error	lark, oauth, http-500, internal-error
Cannot set extra config key '{key}' to masked value '***'; p	http	error	mcp, config, secrets, masking, http-400
MCP server '{server_name}' with stdio transport requires a c	http	error	mcp, stdio, config, validation, http-400
MCP server '{server_name}' command must be a single executab	http	error	mcp, stdio, security, validation, http-400
MCP server '{name}' uses disallowed stdio command '{command_	http	error	mcp, stdio, security, allowlist, http-400
MCP server '{name}' passes '{exec_flag}' to '{command_name}'	http	error	mcp, stdio, security, code-injection, http-400
MCP server '{name}' sets environment variable '{env_name}',	http	error	mcp, security, env-vars, code-injection, http-400
Cannot set env key '{k}' to masked value '***'; provide a re	http	error	mcp, secrets, masking, env, http-400
Cannot set header '{k}' to masked value '***'; provide a rea	http	error	mcp, secrets, masking, headers, http-400
MCP server '{body.server_name}' not found	http	error	mcp, config, setup, http-404
Failed to update MCP configuration: {str(e)}	http	error	mcp, config, http-500, filesystem
Failed to update MCP server state: {str(e)}	http	error	mcp, config, patch, http-500
Failed to clear memory data.	http	error	memory, filesystem, permissions, http-500
Failed to create memory fact.	http	error	memory, filesystem, http-500, persistence
Fact was not stored because memory.max_facts kept higher-con	http	warning	memory, capacity, http-409, configuration
Memory fact '{fact_id}' not found.	http	warning	memory, http-404, idempotency
Failed to delete memory fact.	http	error	memory, filesystem, http-500, gateway
Failed to update memory fact.	http	error	memory, filesystem, http-500, gateway
Failed to import memory data.	http	error	memory, import, filesystem, http-500
Model '{model_name}' not found	http	warning	models, config, http-404
Model '{model_name}' is not available for your role	http	error	authorization, models, http-403, fail-closed, config
Run {run_id} not found	http	info	runs, http-404, ownership
Scheduled task is currently running; retry after the active	http	warning	scheduled-tasks, http-409, concurrency, retry
Authentication required	http	error	auth, scheduled-tasks, http-401
Unsupported context_mode	http	warning	scheduled-tasks, validation, http-422
reuse_thread requires thread_id	http	warning	scheduled-tasks, validation, http-422, threads
Thread not found	http	warning	scheduled-tasks, threads, http-404, ownership
Unsupported schedule_type	http	warning	scheduled-tasks, validation, http-422, cron
cron schedule requires schedule_spec.cron	http	warning	scheduled-tasks, cron, validation, http-422
{exc}	http	warning	scheduled-tasks, cron, timezone, validation, http-422
once schedule must be in the future	http	warning	scheduled-tasks, validation, http-422, time
once schedule must be at least {config.scheduler.min_once_de	http	warning	scheduled-tasks, scheduler, validation, http-422, time
Scheduled task not found	http	info	scheduled-tasks, http-404, ownership
{error} (fallback: Scheduled task trigger conflicted with an	http	error
{error} (fallback: Scheduled task trigger failed)	http	error
Failed to update custom skill: {str(e)}	http	error
Failed to delete custom skill: {str(e)}	http	error
Failed to read history: {str(e)}	http	error
Custom skill '{skill_name}' has no history	http	error
Selected history entry has no previous content to roll back	http	error
Rollback blocked by security scanner: {scan.reason}	http	error
history_index is out of range	http	error
Failed to roll back custom skill: {str(e)}	http	error
Skill '{skill_name}' not found	http	error
Failed to get skill: {str(e)}	http	error
Failed to reload skill '{skill_name}' after update	http	error
Failed to update skill: {str(e)}	http	error
Run {run_id} is active on another worker; retry after lease	http	error
Checkpoint is missing checkpoint_id	http	error	checkpoint, langgraph, regenerate, http-409
Only the latest completed user turn can be edited	http	warning	edit, regenerate, stale-state, http-409
Only completed assistant text turns can be edited	http	warning	edit, regenerate, incomplete-turn, http-409
Could not find source run for assistant message	http	error	regenerate, run-events, retention, http-409
Could not safely resolve the checkpoint before the target us	http	error	checkpoint, lineage, regenerate, http-409
Failed to inspect checkpoint history	http	error	checkpoint, database, http-500, infrastructure
Could not find an addressable checkpoint before the target u	http	warning	regenerate, checkpoint, first-turn, http-409
Could not locate target user message in recent checkpoint hi	http	warning	regenerate, checkpoint, history-limit, http-409
Only successful assistant runs can be edited and rerun	http	warning	run-status, regenerate, http-409
Failed to read latest checkpoint	http	error	checkpoint, http-500, infrastructure
Thread {thread_id} has no checkpoint	http	warning	regenerate, checkpoint, http-404, empty-thread
Message {message_id} not found	http	warning	regenerate, message-id, http-404
Only visible assistant messages can be regenerated	http	warning	regenerate, message-visibility, http-409
Only the latest assistant message can be regenerated	http	warning	regenerate, latest-message, http-409
Could not find the user message for this assistant response	http	warning	regenerate, message-lineage, http-409
The source user message is missing an id	http	error	regenerate, message-id, http-409
Edited message cannot be empty	http	info	edit, validation, http-409
Cannot edit while a goal is active	http	error
Edited message is unchanged	http	error
The source assistant message is missing an id	http	error
Run {run_id} not found	http	error
Run {run_id} is not active on this worker and cannot be canc	http	error
Run {run_id} is not active on this worker and cannot be stre	http	error
after_seq is not supported by this backward-only endpoint	validation	error
Failed to find branch checkpoint	http	error
This turn can no longer be branched from.	http	error
Failed to inspect checkpoint history	http	error
Invalid metadata filter entries: {', '.join(bad_entries)}	validation	error
str(exc)	http	error
Failed to delete local thread data.	http	error	threads, filesystem, permissions, http-500, delete
Failed to create thread	http	error	threads, database, goals, http-500, persistence
Failed to create thread checkpoint	http	error	threads, checkpointer, database, goals, http-500
Thread {thread_id} not found	http	warning	threads, branching, http-404, not-found
Branching is only available in the main conversation.	http	warning	threads, branching, sidecar, http-409, conflict
Failed to create branch	http	error	threads, branching, checkpointer, http-500, database
Failed to update thread	http	error	threads, database, http-500, patch, metadata
Failed to get thread	http	error	threads, checkpointer, http-500, serialization, database
Failed to read thread goal	http	error	threads, goals, checkpointer, http-500
Thread has a run in flight. Set the goal after the run finis	http	warning	threads, goals, concurrency, http-409, conflict
Failed to set thread goal	http	error
Thread has a run in flight. Clear the goal after the run fin	http	error
Failed to clear thread goal	http	error
Thread has a run in flight. Compact after the run finishes.	http	error
Context compaction is disabled.	http	error
Failed to compact thread context.	http	error
Failed to get thread state	http	error
Checkpoint not found	http	error
Checkpoint {body.checkpoint_id} not found	http	error
Unknown thread-state field(s): {', '.join(unknown_fields)}	http	error
Thread has a run in flight. Update state after the run finis	http	error
Failed to update thread state	http	error
Failed to get thread history	http	error
File too large: {display_filename}	http	error
Total upload size too large	http	error
No files provided	http	error
Too many files: maximum is {limits.max_files}	http	warning	upload, http-413, validation, gateway
str(e)	http	error	upload, http-400, thread-id, gateway
Failed to acquire sandbox	http	error	sandbox, http-500, upload, internal-error
Failed to upload {file.filename}: {str(e)}	http	error	upload, http-500, filesystem, cleanup
File not found: {filename}	http	warning	upload, http-404, delete, idempotency
Invalid path	http	warning	upload, http-400, path-traversal, security
Failed to delete {filename}: {str(e)}	http	error	upload, http-500, filesystem, delete
`unsupported_run_option` Run option '{option}' is not supported by DeerFlow	validation	warning	runs, http-422, validation, langgraph-compat
`unsupported_stream_mode` Unsupported stream mode(s): {modes}	validation	warning	runs, http-422, streaming, validation
Invalid message at input.messages[{index}]: {exc}	http	error	runs, http-400, messages, validation
Thread requires delta mode; materialize and convert its chec	exception	error	checkpoints, state, migration, version-drift
checkpoint must be an object	http	warning	runs, http-400, checkpoints, validation
checkpoint thread_id does not match request thread_id	http	warning	runs, http-400, checkpoints, thread-id
Failed to validate checkpoint	http	error	runs, http-500, checkpoints, infrastructure
Checkpoint {checkpoint_id} not found	http	warning	runs, http-404, checkpoints
request config configurable must be an object	http	warning	runs, http-400, config, checkpoints
str(exc)	http	error	runs, http-422, thread-id, validation
Model {model_name!r} is not in the configured model allowlis	http	error	http, config, model, allowlist, api
Thread {thread_id} not found	http	error	http, authz, thread, multi-tenant, api
No chat models are configured. Please configure at least one	exception	critical	config, model, startup, valueerror
No models are authorized for the current role (authorization	exception	error	authz, config, provider, fail-closed, model
No models are authorized for the current role.	exception	error	authz, rbac, fail-closed, model, policy
No chat model could be resolved. Please configure at least o	exception	critical	config, authz, model, drift, valueerror
Missing or empty 'messages' key in {path}	exception	error	prompt, yaml, config, deermem, memory
chat prompt template not found: {name} (searched: {searched}	exception	error	prompt, yaml, packaging, deermem, memory
guaranteed_categories must be an iterable of strings, not a	exception	error	typing, deermem, memory, prompt, typeerror
memory update queue is full (depth {len(self._items)} >= {ma	exception	warning	backpressure, queue, deermem, memory, load
retrieval scope userId must be a string or null	exception	error	typing, retrieval, deermem, memory, scope
retrieval scope agentName must be a string or null	exception	error	typing, retrieval, deermem, memory, scope
retrieval fact.id must be a non-empty string	exception	error	validation, retrieval, deermem, memory, typing
retrieval fact.content must be a non-empty string	exception	error	validation, retrieval, deermem, memory, typing
unsupported FTS5 retrieval mode: {mode}	exception	error	retrieval, config, validation, deermem, memory
retrieval category filter must be a string	exception	error	deermem, memory, validation, fts5
Legacy {section} summary migration conflict in {legacy_path}	exception	critical	deermem, memory, migration, data-corruption
Existing migration backup {backup_path} differs from source	exception	critical	deermem, memory, migration, backup
Failed to create durable migration backup {backup_path}: {ex	exception	critical	deermem, memory, migration, filesystem, oserror
fact.category must be a string	exception	error	deermem, memory, validation, facts
fact.{field} must be a list of strings	exception	error	deermem, memory, validation, facts
fact must be an object	exception	error	deermem, memory, validation, type-error
fact.id may contain only letters, numbers, '_' and '-'	exception	error	deermem, memory, validation, ids, path-safety
fact.content must be a string	exception	error	deermem, memory, validation, facts
fact.content must not be empty	exception	error	deermem, memory, validation, empty-input
fact.confidence must be a number between 0 and 1	exception	error	deermem, memory, validation, confidence
fact.status must be 'active'; deletion is physical	exception	error	deermem, memory, validation, schema
fact.revision must be an integer >= 1	exception	error	deermem, memory, validation, optimistic-concurrency
fact.source.type must be a string	exception	error	deermem, memory, validation, facts
fact.source.threadId must be a string or null	exception	error	deermem, memory, validation, facts
Stored fact {normalized['id']!r} has an invalid revision	exception	critical	deermem, memory, data-corruption, optimistic-concurrency
Expected fact {normalized['id']!r} revision {revision}, foun	exception	error	deermem, memory, optimistic-concurrency, conflict
fact.createdAt and fact.updatedAt must be strings	exception	error	deermem, memory, validation, timestamps
{label} path escapes the user memory directory: {relative!r}	exception	critical	deermem, memory, path-traversal, security, data-corruption
missing YAML front matter	exception	error
front matter is not a mapping	exception	error
Failed to parse canonical fact {path}: {exc}	exception	error
Timed out acquiring memory scope lock {lock_path}	exception	error
Fact id mismatch for {fact_path}	exception	error
Fact scope mismatch for {fact_path}: expected {expected_scop	exception	error
Invalid canonical fact {fact_path}: {exc}	exception	error
Cannot migrate previous default bucket {legacy_agent_dir}: u	exception	error
Fact migration conflict for {candidate['id']!r}	exception	error
Failed to load global memory JSON {path}: {exc}	exception	error
Global memory JSON {path} is not an object	exception	error
Invalid memory operation journal {journal_path}: {exc}	exception	error
Journal {journal_path} contains facts without agentName	exception	error
Journal {journal_path} contains an invalid fact id	exception	error
Unknown journal state {state!r} in {journal_path}	exception	error
Expected user-memory revision {expected_revision}, found {cu	exception	error
agent_name is required for fact repository changes	validation	error
change_set.upserts must contain fact objects	validation	error
Duplicate fact id {fact_id!r} in upserts	validation	error
Fact {fact_id!r} must not already exist	exception	error
Expected fact {fact_id!r} revision {expected_fact_revision},	exception	error
Duplicate fact ids are not allowed in deletes	validation	error
Fact {fact_id!r} cannot be upserted and deleted together	validation	error
Expected fact {fact_id!r} revision {delete_revisions[fact_id	exception	error
change_set.summaries must be an object	validation	error
change_set.summaries.user must be an object	validation	error
change_set.summaries.history must be an object	validation	error
Legacy fact in {source_path} is not an object	exception	error
Legacy facts in {path} require explicit migrate(user_id=...,	exception	error
Invalid legacy manifest entry for fact {fact_id!r}	exception	error
Legacy manifest id mismatch for fact {fact_id!r}	exception	error
Hash mismatch for canonical fact {fact_id!r}	exception	error
Legacy facts in {path} must be a list or mapping	exception	error
agent_name is required to migrate legacy facts	validation	error
memory_data must be an object	validation	error
memory_data.facts is required for an agent full save	validation	error
memory_data.facts must be a list	validation	error
memory_data.facts must contain only fact objects	validation	error	memory, validation, deermem, python
agent_name is required to persist facts	validation	error	memory, validation, scoping, deermem
Duplicate fact ids are not allowed	validation	error	memory, validation, duplicate-key, deermem
agent_name is required to get a fact	validation	error	memory, scoping, validation, deermem
cursor must be >= 0 and limit must be >= 1	validation	error	memory, pagination, validation, deermem
change_set.upserts and change_set.deletes must be lists	validation	error	memory, validation, api-contract, deermem
change_set.deleteRevisions must be an object	validation	error	memory, validation, optimistic-concurrency, deermem
change_set.upsertRevisions must be an object	validation	error	memory, validation, optimistic-concurrency, deermem
change_set.upsertRevisions values must be null or integers >	validation	error	memory, validation, optimistic-concurrency, deermem
agent_name is required to upsert a fact	validation	error	memory, scoping, validation, deermem
agent_name is required to delete a fact	validation	error	memory, scoping, validation, deermem
Failed to update global memory summaries	exception	error	memory, concurrency, optimistic-locking, deermem
backend_config.retrieval_adapter={config.retrieval_adapter!r	validation	critical	memory, configuration, dynamic-import, deermem
backend_config.storage_class={storage_class_path!r} failed t	validation	critical	memory, configuration, dynamic-import, fail-fast, deermem
confidence	validation	error	memory, validation, numeric, deermem
Duplicate fact	validation	warning	memory, deduplication, business-rule, deermem
memory_data	validation	error	memory, validation, import, deermem
memory_data.{section}	validation	error	memory, validation, import, deermem
memory_data.facts	validation	error	memory, deermem, validation, import
Failed to save imported memory data	exception	error	memory, deermem, persistence, io, import
Failed to save cleared memory data	exception	error	memory, deermem, persistence, clear, io
agent_name	validation	error	memory, deermem, validation, required-argument
content	validation	error	memory, deermem, validation, empty-input
Failed to save memory data after creating fact	exception	error	memory, deermem, concurrency, persistence, retry-exhausted
{fact_id}	validation	error	memory, deermem, not-found, delete
Failed to save memory data after deleting fact '{fact_id}'	exception	error	memory, deermem, persistence, concurrency, delete
Failed to save memory data after updating fact '{fact_id}'	exception	error	memory, deermem, persistence, concurrency, update
DeerMem memory update requested but no LLM is configured (se	exception	critical	memory, deermem, configuration, llm, startup
Honcho request failed: POST {path}: {exc}	http	error	memory, honcho, network, http, configuration
Honcho returned non-JSON response: POST {path}: {exc}	http	error	memory, honcho, http, json, configuration
Honcho backend: {key}[{k!r}] has an empty value; remove the	validation	error	config, honcho, memory, yaml, validation
Honcho backend: api_key over plain http requires backend_con	validation	error	security, config, honcho, http, memory
honcho memory recall failed: {exc}	exception	error	honcho, memory, network, runtime, fail-closed
mem0 request failed: {e}	exception	error	mem0, memory, network, http, timeout
mem0 authentication failed (check the API key)	exception	error	mem0, memory, authentication, api-key, http-401
mem0 {method} {path} -> {resp.status_code}: {resp.text[:200]	exception	error	mem0, memory, http, api-error
mem0 {method} {path} returned malformed JSON: {e}	exception	error	mem0, memory, json, proxy, http
mem0 backend_config has unknown keys: {sorted(unknown)}	validation	error	config, mem0, memory, validation, yaml
mem0 failure_policy must be a mapping {read, write}	validation	error	config, mem0, memory, yaml, validation
mem0 failure_policy has unknown keys: {sorted(unknown_fp)}	validation	error	config, mem0, memory, yaml, validation
mem0 allow_insecure_http must be a boolean	validation	error	config, mem0, memory, security, validation
mem0 startup_policy must be one of {sorted(_STARTUP_POLICIES	validation	error	config, mem0, memory, validation
mem0 failure_policy.read must be one of {sorted(_READ_POLICI	validation	error	config, mem0, memory, validation, failure-policy
mem0 failure_policy.write must be one of {sorted(_WRITE_POLI	validation	error	config, mem0, memory, validation, failure-policy
mem0 top_k must be in [1, 1000]	validation	error	config, mem0, memory, validation, range
mem0 score_threshold must be in [0, 1]	validation	error	config, mem0, memory, validation, range
mem0 max_injection_chars must be positive	validation	error	config, mem0, memory, validation, range
mem0 timeout_seconds must be positive	validation	error	config, mem0, memory, validation, timeout
mem0 api_key_env must be a non-empty env var name	validation	error	config, mem0, memory, validation, api-key
mem0 base_url must be an absolute http:// or https:// URL	validation	error	config, mem0, memory, url, validation
mem0 base_url must use https:// because it carries the API k	validation	error
mem0 API key missing: environment variable {self.api_key_env	validation	error
mem0 read failed: {e}	exception	error
mem0 write failed: {e}	exception	error
OpenViking trusted mode is no longer supported by this backe	validation	error
OpenViking custom HTTP client fields are no longer supported	validation	error
OpenViking api_key_env must not be empty	validation	error
Unknown OpenViking backend_config fields:	validation	error
OpenViking base_url must be an absolute http(s) URL	validation	error
OpenViking plain HTTP is allowed only for localhost/openviki	validation	error
OpenViking owner_user_id must not be empty	validation	error
OpenViking USER API key is missing; set {self.api_key_env}	validation	error
OpenViking default_peer_id must start with a lowercase lette	validation	error
OpenViking default_peer_id must not start with the reserved	validation	error
OpenViking timeout_seconds must be a finite value > 0	validation	error
OpenViking retrieval.top_k must be between 1 and 100	validation	error
OpenViking retrieval.score_threshold must be a finite value	validation	error
OpenViking retrieval.max_injection_chars must be between 256	validation	error
OpenViking retrieval.content_mode must be auto, abstract, ov	validation	error
OpenViking retrieval.injection_query must not be empty	validation	error
OpenViking startup_policy must be 'fail_fast' or 'warn'	validation	error	openviking, config, validation, startup
OpenViking failure_policy.read must be 'fail_open' or 'raise	validation	error	openviking, config, validation, failure-policy
OpenViking failure_policy.write must be 'log_and_drop' or 'r	validation	error	openviking, config, validation, failure-policy
OpenViking max_seen_message_ids must be between 16 and 10000	validation	error	openviking, config, validation, limits
OpenViking {name} must be a mapping	validation	error	openviking, config, yaml, validation
OpenViking {name} must be a boolean	validation	error	openviking, config, validation, boolean
The OpenViking automatic-memory backend supports memory.mode	validation	error	openviking, config, memory-mode, validation
OpenViking health check returned an unhealthy response	exception	critical	openviking, health-check, startup, memory
OpenViking memory write requires thread_id	validation	error	openviking, memory, thread-id, validation
OpenViking USER API key is bound to DeerFlow owner_user_id {	exception	critical	openviking, auth, multi-user, memory
OpenViking capture cursor is unreadable; refusing unsafe rep	exception	error	openviking, memory, corruption, filesystem
OpenViking capture cursor is invalid; refusing unsafe replay	exception	error	openviking, memory, corruption, state-file
{message} (session={session_id})	exception	error	openviking, memory, write-failure, error-handling
The OpenViking memory backend requires langchain-openviking=	exception	error	openviking, import, dependencies, installation
The installed OpenViking SDK lacks request-scoped actor-peer	exception	error	openviking, version-conflict, dependencies, import
Invalid OpenViking peer scope: {agent_name!r}	validation	error	openviking, agent-name, validation, memory
memory mode='tool' requires a backend that implements search	validation	error	memory, tool-mode, validation, backend
search not supported by {type(self).__name__}	exception	error	memory, not-implemented, search, backend
get_memory not supported by {type(self).__name__}	exception	error	memory, not-implemented, api-surface, backend
clear_memory not supported by {type(self).__name__}	exception	error	memory, not-implemented, data-deletion, backend
import_memory not supported by {type(self).__name__}	exception	error	memory, not-implemented, backend, deerflow
reload_memory not supported by {type(self).__name__}	exception	warning	memory, not-implemented, cache, deerflow
create_fact not supported by {type(self).__name__}	exception	error	memory, not-implemented, crud, deerflow
delete_fact not supported by {type(self).__name__}	exception	error	memory, not-implemented, crud, deerflow
update_fact not supported by {type(self).__name__}	exception	error	memory, not-implemented, crud, deerflow
memory.manager_class={manager_class!r} is not a registered b	validation	critical	memory, configuration, startup, backend, deerflow