n8n-io/n8n
Documented errors, page 2 of 11. Back to n8n-io/n8n
| Code / Message | Type | Severity | Tags |
|---|---|---|---|
| Invalid PgVectorStore table name | exception | error | postgres, validation, configuration, sql-injection-safety |
| Invalid : argument cannot start with '-' (got: ) | validation | warning | mcp-browser, agent-browser, security, argument-injection, validation |
| error?.description || error?.message | exception | error | guardrails, node-operation, error-wrapping, unexpected |
| Security violations detected | exception | error | task-runner, python, security, sandbox, static-analysis, code-node |
| The ‘text‘ parameter is empty. | exception | error | langchain, agent, prompt, configuration, plan-and-execute |
| Webhook URL cannot target private/internal IP addresses | exception | error | webhook, ssrf, security, validation, private-ip |
| Workflow not found in sqlite db | exception | error | sqlite, workflow, data-lookup, eval-results |
| The type is not supported | exception | error | authentication, configuration, http-request-tool, ai-tool |
| Python script produced no output. stderr | exception | error | |
| Third-party licenses file not found | http | warning | licensing, build, assets, deployment |
| was registered without a runSubAgent callback, and no host… | exception | error | delegate-tool, configuration, agent-build, runtime |
| Conversation ID is required | exception | error | openai, conversation, missing-id, validation, v2 |
| Filter operator " " on key " " requires a non-empty array… | exception | error | vector-store, supabase, filter, validation, postgrest |
| suite " " not found. Available: . | exception | error | cli, validation, langtracer, network, suite, langtracer-push |
| Unsupported syntax: 'super keyword is not supported in SDK… | exception | error | sdk-interpreter, super, class, defense-in-depth |
| Workflow has no node to start the workflow - at least one… | exception | warning | activation, trigger, validation, workflow |
| Cannot find alias for property | exception | error | query-builder, alias, property-path, where |
| Invalid sandbox provider | exception | error | typescript, exhaustiveness, sandbox, never-type |
| policy.maxChildren must be a finite positive integer | exception | error | tools, delegate, sub-agent, validation, policy, numeric |
| Concurrency limit set to invalid value | exception | error | concurrency, config, startup, user-error |
| Flag needs a value | exception | error | cli, argument-validation, instance-ai, cost-report |
| Invalid output format | exception | error | guardrails, llm, output-parsing, validation |
| No executable path for | exception | error | mcp-browser, playwright, browser-launch, configuration |
| LangSmithTelemetry creates its own tracer — do not use… | exception | warning | security, credentials, http-request, ai-generated |
| Seed declares two workflows named | exception | error | seed-fixture, workflow, validation, name-uniqueness |
| Agent " " has tools requiring approval or suspend/resume… | exception | error | checkpoint, suspend-resume, approval, configuration, agent |
| Failed to parse at | exception | error | json, filesystem, validation, build-mcp-manifest, data-integrity |
| File " " is not loaded. | exception | error | tools, text-editor, invariant, agents |
| Unsupported embedding provider | exception | error | embedding, model-config, validation, provider, registry |
| No code for "Supply Data" set on node | exception | error | code-node, langchain, configuration, user-input |
| The resource " " is not supported! | validation | error | ollama, router, resource, enum, workflow-json |
| Tool " " was called but not found among connected tools | exception | error | tool-call, llm, alibabacloud, langchain |
| You must use exactly one of `--userId`, `--projectId` or… | exception | error | cli, ldap, flag-validation, user-error |
| error?.description || error?.message || 'Unknown error' | exception | error | guardrails, error-wrapping, promise, guardrail |
| A case declares distinct scenario seed data tables… | exception | error | eval-harness, seed-tables, limits, configuration |
| Plan contains a dependency cycle involving | validation | error | planned-tasks, validation, plan-graph, cycle-detection, llm-retryable |
| Unable to parse function body | exception | error | runtime, code-helpers, function-parsing |
| Entity metadata for # was not found. Check if you specified… | exception | critical | relation, inverse-side, entity-registration, startup |
| MFA not used during authentication | exception | error | auth, mfa, authentication, security |
| Scenario " " declares seed table " " that was not… | exception | error | eval-harness, seed-tables, harness-bug, data-integrity |
| Thread : workflow(s) were built in the trace but… | exception | error | eval-harness, workflow-sdk, parser-drift, reconstruction |
| Unauthorized | http | warning | microsoft, bot-framework, webhook, authentication, jwt, http-401, agent-365 |
| Webhook request failed | exception | error | webhook, network, http, delivery |
INVALID_CONNECTION Invalid connection | error_code | error | workflow-builder, connections, validation, node-types |
| No serializer registered for format | exception | error | workflow-builder, serialization, registry, plugins |
| Rate limit exceeded. Please wait a moment and try again. | exception | warning | ai-workflow-builder, llm, rate-limit, quota, retry |
| Workflow directory not found | exception | error | cli, filesystem, path, validation, build-mcp-manifest |
| agents.chat.delegate.childSuspendUnsupported | exception | error | suspend-resume, delegate-tool, cascade, schema-validation |
| Cannot find alias for relation at | exception | error | query-builder, join, relation, property-path |
invalid_graph invalid_graph | http | error | engine, http, graph-validation, validation |
| Invalid images parameter format | exception | error | validation, type-guard, google-gemini, image-edit, parameter-structure |
| Provider connections cannot be global, managed, or… | exception | error | cli, import, credentials, instance-scope, provider-connection, flags, user-error |
| The file content is not in JSONL format | validation | error | openai, file-upload, jsonl, fine-tuning, format-validation, v1 |
| Human-in-the-Loop nodes cannot be used inside a sub-agent… | exception | error | langchain, agent, tools-agent, hitl, sub-agent, approval, v3 |
| Maximum branch depth | exception | error | workflow-builder, recursion, cycle-detection, graph |
admittance_rejected Execution admittance rejected | http | warning | execution, admittance, rate-limit, quota, engine |
| Index contains column that is missing in the entity ( ) | exception | error | index, metadata, schema, startup |
| Invalid response format from Gemini API | exception | error | api-response, type-guard, google-gemini, image-edit, validation |
SET_CREDENTIAL_FIELD has a field named " " which appears to be storing credentials. Use n8n's… | validation | error | |
ARRAY_INPUT_COLLAPSED_TO_FIRST_ITEM Code node reads the first input item (e.g. $input.first().json / items[0].json)… | error_code | error | |
| output.error.errors[0] | validation | warning | api, validation, zod, rest, user-error |
| No suspended run found for runId | exception | warning | credentials, http-request, authentication, ai-generated |
| Referenced column was not found in entity | exception | error | typeorm, relations, many-to-many, join-table, schema-validation |
| Task execution timed out after | exception | error | python, task-runner, timeout, subprocess, concurrency |
| Checkpoint task " " must depend on at least one… | validation | error | planned-tasks, validation, plan-graph, checkpoint, llm-retryable |
| Failed to parse judge response as JSON | exception | error | llm, llm-judge, responder, evaluations, json, parsing |
| LangSmith client not initialized - check LANGSMITH_API_KEY | exception | error | langsmith, cli, configuration, credentials, env |
| Module ' ' is disallowed | exception | error | task-runner, security, sandbox, module-resolution, configuration |
| Weaviate store factory did not return an… | exception | critical | weaviate, vector-store, assertion, internal, version-mismatch |
| Internal error. Subject | exception | error | typeorm, persistence, primary-key, update, internal |
| must be a positive number of seconds, got | validation | error | scheduler, configuration, validation, numeric |
| ${agentLabel} ${reason} | exception | error | hitl, sub-agent, streaming, status, consumer |
| The model " " does not support the Sampling Temperature… | exception | error | anthropic, llm, sampling, deprecation, configuration |
| File not found | exception | critical | config, secrets, env, filesystem, user-error |
| Task did not complete within the maximum polling time. Last… | exception | warning | video-generation, async-task, polling, timeout, alibabacloud, dashscope |
| Provided "skip" value is not a number. Please provide a… | exception | error | typeorm, query-builder, validation, pagination |
| Run timed out after ms | exception | error | timeout, run-lifecycle, sse, chat-loop |
| ChromaDB embedding dimension mismatch | exception | error | chromadb, vector-store, embedding-dimension, data-mismatch, node-operation-error, langchain |
| Your license does not allow for | exception | critical | license, multi-main, startup, enterprise |
| Unexpected embedding response from Bedrock | exception | error | aws, bedrock, embeddings, upstream-response, operational |
unimplemented unimplemented | http | error | engine, http, unimplemented, graph-validation |
| Dynamic property access is not allowed. Use static property… | exception | error | sdk, validators, security, dynamic-access, computed-member |
0 Credential with ID " " was not found. | exception | error | credentials, testing, instance-credentials, validation, rest-api |
| Invalid prefix option given for | exception | error | typeorm, embedded, decorators, metadata, api-misuse |
| Database connection timed out | exception | error | database, postgres, timeout, network, transient |
| Unsupported syntax: 'Callee type | exception | error | sdk-interpreter, callee, call-expression, higher-order |
| Transaction method requires callback in second parameter if… | exception | error | typeorm, transactions, api-misuse, typescript |
| Unknown role | exception | critical | message-normalization, data-integrity, ai-sdk, role-validation |
| Add operation is only supported for many-to-many and… | exception | error | typeorm, relation-query-builder, remove, relation-type |
| LangSmith mode requires `--dataset` and does not support… | exception | error | langsmith, cli, evaluations, validation, configuration |
| Relation with property path | exception | error | query-builder, join, relation, metadata |
| Unknown flag: (use --help) | exception | error | cli, argument-validation, security, instance-ai, mcp-manifest |
| Content not viewable | exception | warning | binary-data, rest, bad-request, mime-type, security |
| Dangerous key " " found in JSON data | validation | error | security, prototype-pollution, json, attachment-parsing |
| Duplicate skill id | exception | error | skills, duplicates, configuration |
| . () must immediately follow adding a node. Use it as . | exception | error | workflow-builder, branching, if-node, switch-node |
| No sessionId provided | http | error | |
| Nodes from fromJSON() do not support input() | exception | error | workflow-builder, fromjson, import, connections |
| OnUpdateType " " is not valid for ! | exception | error | typeorm, relations, sqlite, schema-validation, foreign-keys |
| Seed artifact id " " is too short to remap safely (need ≥8… | exception | error | seed-fixture, validation, id-remap |