n8n-io/n8n
Documented errors, page 7 of 11. Back to n8n-io/n8n
| Code / Message | Type | Severity | Tags |
|---|---|---|---|
| Invalid workflow state: workflow or messages missing | exception | error | |
| No task_id returned from video generation request | exception | error | minimax, video-generation, i2v, response-shape, task-id |
| NVIDIA embeddings API returned | exception | error | nvidia, embeddings, batch, upstream-response, operational |
| Reflector field " " must contain only strings | exception | error | llm-output-validation, observation-log, json-parsing, type-mismatch |
| SplitInBatches node output connections are managed by… | exception | error | runtime, builder, split-in-batches, connections |
| Task subprocess exited with code | exception | error | python, task-runner, subprocess, crash, exceptions |
| Thread reconstructed to zero seed messages before the live… | exception | error | eval-harness, trace-shape-drift, reconstruction, version-drift |
| Certificate authentication requires an RSA private key | exception | error | n8n-utils, jwt, oauth, crypto, rsa, validation |
| Failed to write | exception | error | sandbox, filesystem, write, instance-ai, command-fallback |
| Please contact your administrator | exception | error | email, smtp, mailer, config, infrastructure |
DISCONNECTED_NODE is not connected to any input. It will not receive data. | validation | info | connections, validator, graph, disconnected |
| Eval " " requires either .check() or .judge() | exception | error | eval, builder, validation |
| Failed to parse workflow code | exception | error | sdk, codegen, parse-workflow-code, security, syntax-error-wrapper |
| Invite links are not supported on this system, please use… | exception | warning | invitations, sso, saml, token, rest-api |
| No captured fields found for credentialsKey | exception | error | credential, secrets-buffer, ordering, capture |
| No version found matching | exception | error | semver, npm, scanner, versioning |
| This fallback model is not supported in | exception | error | langchain, agent, tools-agent, openai, responses-api, version, fallback, v2 |
| Unsupported syntax: 'Dynamic property assignment' is not… | exception | error | sdk, ast-interpreter, dynamic-access, assignment |
| User denied access to | exception | warning | permissions, computer-use |
| Browser connection lost | exception | critical | connection-lost, disconnect-reason, reconnect, state |
| Cell at row , column exceeds max string length of characters | validation | error | |
ESTATUS HTTP status | exception | error | oauth2, auth, http-status, token-endpoint, client-oauth2 |
| MCP server " ": exactly one of "url" or "command" must be… | exception | error | mcp, config, validation, transport |
| SQLite only supports SERIALIZABLE and READ UNCOMMITTED… | exception | error | typeorm, sqlite, transactions, database, isolation |
| ${file.error?.message ?? 'Unknown error'} | exception | error | google-gemini, file-upload, streaming, api-error, polling, node-operation-error |
NODE_PARAMETER_TOO_LARGE Parameter value is too large to retrieve | error_code | warning | workflow-builder, parameters, limits, memory |
OUTPUT_INDEX_NOT_FOUND Source node " " has no connections at output index | error_code | warning | workflow-builder, connections, indices, remove |
| Sandbox does not support command execution | exception | error | tools, sandbox, capability, agents |
| The ‘query‘ parameter is empty. | exception | error | configuration, parameter-validation, retrieval-qa, per-item |
| Brave search failed | exception | error | |
CODE_NODE_FORBIDDEN_IMPORT Code node imports a module unavailable in the sandbox (luxon, openai… | validation | warning | lint, code-node, imports, sdk |
| renameKeys(): expected an even amount of args: from1, to1… | exception | error | expression-runtime, array-extensions, renamekeys, argument-validation |
| Episodic memory requires a storage backend that implements… | exception | error | memory, episodic, storage, validation |
| " " has too many archive entries ( > ); refusing to parse a… | exception | error | |
| OnDeleteType " " is not supported for ! | exception | error | on-delete, foreign-key, driver, startup |
| Only the "load", "update", "insert", and "retrieve-as-tool"… | exception | error | |
| Operation not supported: pdf | exception | warning | mcp-browser, agent-browser, unsupported, pdf, capability |
| SplitInBatches node connections are managed by… | exception | error | runtime, builder, split-in-batches, connections |
| Subnode input connections are managed by parent node… | exception | error | subnode, connections, workflow-builder, fluent-api |
| Syntax error | exception | error | sdk, parser, syntax-error, acorn |
| Cannot delete your own user | exception | error | users, delete, self-protection, rest-api, bad-request |
| Failed to fetch templates | exception | error | templates, network, api, external, retry |
| Failed to parse PDF | exception | error | |
| Gateway rejected token | exception | error | gateway, authentication, computer-use |
| Guardrail " " requires a strategy | exception | error | guardrail, builder, validation |
| Imports are not supported | exception | error | n8n, expression, typescript, ast, imports, security |
| Message exceeds maximum length of | validation | warning | ai-workflow-builder, validation, llm, input-validation |
| The agent type " " is not supported | exception | error | agent, dispatch, config, validation |
| You cannot update relations of multiple entities with the… | exception | error | typeorm, relation-updater, one-to-many, bulk |
CONNECTION_TYPE_INFERENCE_FAILED Could not infer connection type | error_code | error | |
EXECUTION_ERROR Unknown error occurred | error_code | error | workflow-builder, bug, unhandled, execution |
| seed.endpoint " " matches no configured LangSmith tenant… | exception | error | langsmith, env, config, multi-tenant |
| Failed to evaluate cron expression | validation | error | scheduler, cron, timezone, dst |
| Failed to read | exception | error | |
| Login is handled by . Please contact your Identity Provider… | exception | error | sso, saml, oidc, auth, password-reset |
| Named object syntax does not support .onEachBatch() -… | exception | error | runtime, builder, split-in-batches, fluent-api |
| PDF " " contains no extractable text (it may be a scanned… | exception | error | |
| Security settings are managed via environment variables and… | exception | error | security, config, env, license |
| Invalid request | exception | error | auth, invitation, bad-request, users |
| recurring_cron.recurrenceSize must be an integer of at… | validation | error | scheduler, validation, recurrence, configuration |
| Security violation: 'constructor access' is not allowed | exception | error | sdk, validators, security, prototype-pollution, sandbox-escape |
| Expected Supabase credentials host to be a string | exception | error | supabase, credentials, config, validation, type-guard |
| Input data must contain a "input" field with the search… | validation | error | |
| Invalid instance URL. | validation | error | local-gateway, url-validation, deeplink, validation |
| Only the "retrieve" and "retrieve-as-tool" operation mode… | exception | error | |
| Port must be between 0 and 65535, got | validation | error | task-runner, python, configuration, port, health-check |
| Tool " " requires a handler | exception | error | tool, builder, validation, handler |
| Unknown binary check(s) | exception | error | |
| xlsx " " sheet " " is empty. | exception | error | xlsx, empty-file, attachment-parsing, validation |
| API key is required to use Zep Cloud | exception | error | |
| At least one attribute must be specified | exception | error | configuration, schema, information-extractor, parameter-validation |
| Azure Blob container name not configured. Please set… | exception | critical | azure, blob-storage, config, env-vars, startup |
| Reflector merge[ ].parentId must be a string or null | exception | error | llm-output-validation, observation-log, json-parsing, type-mismatch, optional-field |
| SQLite package has not been found installed. Try to install… | exception | critical | database, dependencies, sqlite, bootstrap |
| Task timeout must be positive, got | validation | error | task-runner, python, configuration, timeout, startup |
| API Key is missing in the selected Azure OpenAI API… | exception | error | azure, openai, credentials, authentication, api-key |
| --build-via-mcp is incompatible with --prebuilt-workflows… | exception | error | |
| Database type currently not supported | validation | error | config, database, startup, validation |
| Invalid hitl input for tool | exception | error | tool-executor, hitl, gated-tool, validation |
| LLM does not support tools | exception | error | |
| Secret capturing failed with error | exception | error | credential, sensitivity, html-probe, load-state |
| Workspace ID is required for the Germany (Frankfurt) region | exception | error | alibaba, llm, region, credentials, configuration |
| xlsx " " has no sheets. | exception | error | xlsx, empty-file, attachment-parsing, validation |
| Cannot call .input() on the workflow builder. Use .input()… | exception | error | workflow-builder, api-misuse, input-selector |
| Entity using single-table inheritance, it should also have… | exception | error | single-table-inheritance, discriminator, metadata, startup |
| Relation " " was not found; please check if it is correct… | exception | error | typeorm, find-options, relations, metadata |
| The ‘text parameter is empty. | exception | error | agent, conversational-agent, prompt, validation |
| There was an error: "The workflow did not return a response" | exception | error | workflow-tool, ai-tool, sub-workflow, empty-output |
| Tool " " requires an input schema | exception | error | tool, builder, validation, zod, schema |
| Credential creation failed | exception | error | gateway, credentials, computer-use |
| Model is not supported for video generation. Please use a… | exception | error | google-gemini, video-generation, veo, model-id, validation, node-operation-error |
| QueryBuilder parameter keys may only contain numbers… | exception | error | query-builder, parameters, validation, injection |
| Unknown algorithm . Available algorithms are: , and Base64. | exception | error | expression, string, crypto, hash, validation |
| Add operation is only supported for many-to-many and… | exception | error | typeorm, relation-query-builder, add, relation-type |
| Cannot find relation | exception | error | relation-count, relation, metadata, startup |
| Environment variable N8N_RUNNERS_GRANT_TOKEN is required | validation | critical | task-runner, python, configuration, authentication, startup |
| Instance AI runtime workspace is unavailable. | exception | error | |
| Removed entity " " is also scheduled for update operation… | exception | error | typeorm, persistence, cascade, unit-of-work, conflict |
| The 'prompt' parameter is empty. | exception | error | configuration, parameter-validation, prompt, per-item |
| Your instance is not licensed to use role | exception | error | license, rbac, projects, memberships |