langflow-ai/langflow
Documented errors, page 3 of 4. Back to langflow-ai/langflow
| Code / Message | Type | Severity | Tags |
|---|---|---|---|
| You cannot upload a component as a flow or vice versa | validation | warning | mcp, install, wsl, claude-desktop |
| Share could not be updated: it may conflict with an… | http | error | authz, api, shares, conflict, patch |
| When existing_agent_id is provided, Langflow uses the… | validation | error | watsonx-orchestrate, pydantic, validation, http-422, existing-agent, description |
| No supported files found in folder. Allowed types | validation | warning | mcp, install, http-400, client-support |
| Deployment name is required | validation | error | frontend, deployments, validation, form |
| Cannot change fs_path of a flow you do not own. | http | error | authorization, ownership, http-403, fs-path, rbac |
| error: invalid JSON in | console | error | python, json, migrations, tooling, validation |
| Per-file metadata is not valid JSON | validation | warning | knowledge-base, metadata, json, validation, http-422 |
| ZIP contains JSON entries, exceeding the limit of | http | error | zip, upload, limit, import |
| Flow module must define 'get_graph()' function | http | error | flow-loader, dynamic-import, get-graph, langflow-agentic |
| add_app_ids and remove_app_ids must not overlap | validation | error | watsonx-orchestrate, pydantic, validation, http-422, overlap, app-ids |
| Content type not found for extension | http | error | files, mime-type, download, http-500 |
| `since` must be strictly less than `until` | http | warning | authz, audit, validation, http-400, time-range |
| Flow file ' ' not found | http | warning | agentic, flow-loader, http-404, file-not-found |
| Per-file metadata exceeds the | validation | warning | knowledge-base, metadata, validation, limits, http-422 |
| Version entry not found | http | error | http-404, flow-versions, not-found, pruning |
| Failed to load file (HTTP ) | exception | warning | mcp, sse, disconnect, http-404 |
| Invalid fs_path: directory traversal (..) is not allowed | http | warning | security, path-traversal, validation, http-400, fs-path |
| Invalid refresh token | http | warning | auth, refresh-token, http-401, session, langflow |
| Invalid file path format | http | error | security, path-traversal, http-400, validation, public-api |
| provider_data.existing_agent_id cannot be set to null. | validation | error | watsonx-orchestrate, pydantic, validation, http-422, null-handling, existing-agent |
| Error getting knowledge base. | http | error | knowledge-base, http-500, metadata, server-error |
| cannot be set to null. | validation | error | watsonx-orchestrate, pydantic, validation, http-422, null-handling |
| Invalid JSON format. | exception | error | frontend, mcp, json, validation, copy-paste |
| Role still has active assignments — revoke them before… | http | error | authz, api, roles, conflict, foreign-key, delete |
| Error in parser | exception | error | frontend, parsing, error-masking, utilities |
| Cannot change a2a_enabled of a flow you do not own. | http | error | authorization, ownership, http-403, a2a, rbac |
| Failed to patch MCP Server | exception | error | mcp, mcp-composer, install, http-500 |
| Metadata array ' ' must contain only strings. | validation | warning | knowledge-base, metadata, validation, type-error, http-422 |
| Unknown scope | http | warning | authz, api, shares, validation, enum, query-params |
| Multiple files are not allowed | validation | error | mcp, install, http-500, filesystem |
| System roles cannot be deleted | http | error | authz, api, roles, system-roles, delete |
| Incorrect username or password | http | warning | auth, login, http-401, credentials, langflow |
| Metadata array ' ' exceeds items. | validation | warning | knowledge-base, metadata, validation, http-422, limits |
| Setting this parent would create a role hierarchy cycle | http | warning | authz, rbac, http-400, roles, hierarchy, cycle-detection |
| You don't have permission to delete this flow. | http | error | authz, api, flows, forbidden, rbac, delete |
| Error in streaming request. | exception | error | frontend, streaming, http-error, api-client |
| Unexpected error | http | error | http-500, catch-all, event-stream, build |
| Failed to reload bundle | exception | error | mcp, mcp-composer, oauth, http-500 |
| Metadata exceeds the | validation | warning | knowledge-base, metadata, validation, http-422, limits |
| Invalid file entry | http | error | security, path-traversal, http-400, public-api, validation |
| Invalid . Use a simple without directory paths or '..'. | http | warning | path-traversal, http-400, security, validation |
| Invalid file type | validation | error | mcp, mcp-composer, oauth, configuration |
| Cannot create .components directory | validation | error | filesystem, permissions, disk-full, user-components |
| Error ingesting folder to knowledge base. | http | error | knowledge-base, folder-ingest, http-500, server-error |
| Assignment already exists for this user/role/domain | http | warning | authz, rbac, http-409, integrity-error, idempotency |
| Invalid fs_path: null bytes are not allowed | http | warning | security, validation, null-byte, http-400, fs-path |
| Resource not found | http | error | authz, api, shares, not-found, validation |
| Failed to install MCP | exception | warning | mcp, install, local-only, proxy |
| Invalid user | http | error | mcp, http-403, superuser, configuration, user-management |
| code size bytes exceeds limit of bytes | validation | error | validation, size-limit, user-components, llm-output |
| Invalid base directory | http | error | configuration, filesystem, http-400, fs-path, environment |
| Superuser required to administer teams. | http | error | authz, api, teams, forbidden, superuser, rbac |
| provider_data.display_name is required for new agent… | validation | error | watsonx-orchestrate, pydantic, validation, http-422, required-field, display-name |
| Failed to load models. Please check your provider… | exception | error | mcp, streamable-http, http-500, transport |
| actions must be strings | validation | warning | authz, pydantic, validation, http-422 |
| Invalid path | http | error | filesystem, validation, http-400, fs-path, windows |
| provider_data.llm is required for new agent creation. | validation | error | watsonx-orchestrate, pydantic, validation, http-422, required-field, llm |
| Cannot transfer ownership of a flow you do not own. | http | error | authorization, ownership, http-403, flows, security |
| Failed to delete MCP Server | exception | error | mcp, install, configuration, http-500 |
| parent_role_id does not reference an existing role | http | warning | authz, rbac, http-400, roles, validation |
| code must be a non-empty string | validation | error | validation, empty-input, user-components |
| Template not found | http | error | templates, http-404, starter-projects |
| File type not allowed. Allowed types | validation | warning | mcp, install, http-400, client-install |
| Superuser required to administer roles. | http | error | authz, rbac, http-403, authorization, roles |
reload-in-progress reload-in-progress | exception | error | mcp, http-404, patch, ownership |
| Assignment not found | http | warning | authz, rbac, http-404, role-assignments |
| Knowledge base ' ' was recently deleted but its on-disk… | http | error | |
| File too large | http | warning | agentic, files, http-413, size-limit |
| user_id not found | http | error | authz, rbac, http-404, role-assignments |
| Langflow was not able to connect to the server. Please make… | exception | error | mcp, mcp-composer, install, http-500 |
| Role not found | http | warning | authz, rbac, http-404, roles |
| System roles cannot be modified | http | warning | authz, rbac, http-400, roles, system-roles |
| Build job not found | exception | error | frontend, build, streaming, http-404, scaling |
| actions capped at unique entries | validation | warning | authz, validation, http-422, rate-limits |
| Superuser required to administer role assignments. | http | error | authz, rbac, http-403, authorization |
| Cannot request logs before and after the timestamp | http | warning | logging, http-400, query-params, api-usage |
| resource_ids capped at | http | warning | authz, validation, http-400, pagination |
| role_id not found | http | error | authz, rbac, http-404, role-assignments |
| An error occurred while uploading the file | exception | error | mcp, http-404, install, ownership |
| Role with name already exists | http | warning | authz, rbac, http-409, roles, unique-constraint |
| Timestamp is required when requesting logs after the… | http | warning | logging, http-400, query-params |
| Share not found | http | error | authz, api, shares, not-found |
| provider_data.tenant_id is required for watsonx-orchestrate… | exception | error | |
| Deployment provider create result contains a created tool… | http | error | |
| A role cannot be its own parent | http | warning | authz, rbac, http-400, roles, hierarchy, validation |
| Flow(s) with the following IDs already exist | http | error | |
| One or more flow versions are invalid. Please ensure the… | http | error | |
| is not installed on this system. Please install first. | http | error | |
| Deployment provider create result contains a tool binding… | http | error | |
| Deployment provider does not support binding-aware GET sync… | http | error | |
| The /process endpoint is deprecated and will be removed in… | http | error | |
| The /task endpoint is deprecated and will be removed in a… | http | error | |
| Failed to persist knowledge base | http | error | |
| Invalid flow-version provider_data payload: snapshot… | http | error | |
| If you pass an input_value to the chat input, you cannot… | exception | error | |
| If you pass an input_value to the text input, you cannot… | exception | error | |
| Deployment provider update result is missing required… | http | error | |
| Invalid flow-version provider_data payload: snapshot id… | http | error | |
| Snapshot binding count mismatch on create | http | error |