ErrLookup › tiangolo/fastapi
tiangolo/fastapi
FastAPI framework, high performance, easy to learn, fast to code, ready for production · Python · 533 source files
Analyzed at 3e8d1526d8 on 2026-08-11. 62 documented errors.
| Code / Message | Type | Severity | Tags |
|---|---|---|---|
| Response not awaited. There's a high chance that the… | exception | critical | dependencies-with-yield, exception-handling, routing, response, fastapi |
| Code block (lines - ) has different number of lines than… | exception | error | docs, translation, markdown, validation |
| The dependency " " has a scope of "request", it cannot… | exception | error | dependencies, scope, dependency-injection, fastapi, app-startup |
| Invalid X-Token header | http | error | fastapi, authentication, header, httpexception, app-testing |
| {"errors": exc.errors(), "body": body.decode()} | http | error | fastapi, validation, custom-route, request-body, pydantic |
| Owner error | http | error | fastapi, dependencies, authorization, http-400 |
| validation error(s) | validation | error | response-model, validation, pydantic, response, fastapi |
| Number of code include placeholders does not match the… | exception | error | fastapi, docs, translation, ci, validation |
| Expected UploadFile, received | validation | error | uploadfile, file-upload, pydantic, multipart, validation, fastapi |
| Inactive user | http | error | fastapi, authentication, authorization, python, oauth2 |
| Not enough permissions | http | error | fastapi, authentication, oauth2, scopes, jwt, authorization |
| Form data requires "python-multipart" to be installed. It… | exception | error | multipart, installation, form-data, dependency, fastapi |
| Number of code blocks does not match the number in the… | exception | error | docs, translation, markdown, validation |
| No route exists for name | exception | error | fastapi, routing, url-reversal, frontend-routing |
| Not authorized | http | error | fastapi, http-403, sqlmodel, streaming, authorization |
| Could not find discussion for language | exception | error | github, translation, discussions, ci |
| Incorrect username or password | http | error | fastapi, authentication, http-basic, secrets, python |
| Code block (lines - ) has different language than the… | exception | error | fastapi, docs, translation, ci, validation |
| Couldn't auto-generate sponsors section | exception | error | docs, sponsors, markdown, validation |
| X-Token header invalid | http | error | fastapi, http-400, headers, authentication, global-dependency |
| SSE ' ' must be a single line | exception | error | fastapi, sse, validation, streaming |
| Frontend fallback file | exception | error | fastapi, frontend-routing, filesystem, configuration |
| Not authenticated | http | error | fastapi, authentication, oauth2, bearer, python |
| Number of markdown links does not match the number in the… | exception | error | fastapi, docs, translation, ci, validation |
| must start with | exception | error | release, docs, validation, markdown |
| Frontend directory ' ' does not exist. Resolved absolute… | exception | error | fastapi, frontend-routing, filesystem, deployment, configuration |
| Number of HTML links does not match the number in the… | exception | error | fastapi, docs, translation, ci, validation |
| Item not found | http | error | fastapi, not-found, in-memory-store, httpexception, app-testing |
| Number of headers with permalinks does not match the number… | exception | error | fastapi, docs, translation, ci, validation |
| Header levels do not match between document and original… | exception | error | fastapi, docs, translation, ci, validation |
| Item not found, there's only a plumbus here | http | error | fastapi, http-404, annotated, dependencies |
| Oops! did something. There goes a rainbow... | http | warning | fastapi, exception-handler, custom-exception, http-418 |
| Cannot set both 'data' and 'raw_data' on the same… | exception | error | fastapi, sse, validation, streaming |
| Hero not found | http | warning | fastapi, sqlmodel, sqlalchemy, rest, python |
| Invalid YAML | http | error | fastapi, http-422, yaml, request-body, validation |
| Expected exactly one __version__ assignment in | exception | error | release, versioning, validation |
| A frontend path cannot be empty | exception | error | fastapi, frontend-routing, configuration, assertion |
| pydantic.v1 models are no longer supported by FastAPI… | exception | error | fastapi, pydantic, response-model, migration, version-change |
| fallback must be 'auto', 'index.html', '404.html', or None | exception | error | fastapi, frontend-routing, configuration, assertion |
| Prefix and path cannot be both empty | exception | error | fastapi, routing, configuration, include-router |
| New version must be greater than current version | exception | error | release, versioning, validation |
| Release notes section for | exception | error | release, docs, validation |
| {errors} | exception | error | encoding, serialization, response-model, json, fastapi |
| Nope! I don't like 3. | http | warning | fastapi, http-418, exception-handler, logging |
| SSE 'id' must not contain null characters | exception | error | fastapi, sse, validation, streaming, security |
| Couldn't find pre section | exception | error | docs, sponsors, markdown, validation |
| response.text | exception | error | network, github, graphql, ci |
| To use the fastapi command, please install… | console | error | cli, installation, fastapi, packaging, dependency |
| No github event file available at | exception | error | github, ci, environment, validation |
| Could not find release notes section for | exception | error | release, docs, validation |
| Invalid version: . Expected format: X.Y.Z | validation | error | release, validation, versioning |
| pydantic.v1 models are no longer supported by FastAPI… | exception | error | pydantic, pydantic-v2, encoding, migration, fastapi |
| Invalid ID format, it must start with "isbn-" or "imdb-" | validation | error | fastapi, pydantic, aftervalidator, http-422, query-params |
| You can only update the item: plumbus | http | error | fastapi, forbidden, business-rule, httpexception, bigger-applications |
| No PR number available | exception | error | github, ci, validation, environment |
| Form data requires "python-multipart" to be installed. You… | exception | error | multipart, installation, form-data, dependency, fastapi |
| A frontend path must start with '/' | exception | error | fastapi, frontend-routing, configuration, assertion |
| Item already exists | http | error | fastapi, conflict, duplicate, httpexception, app-testing |
| Path must be inside | exception | error | docs, validation, paths, permalinks |
| No Jessica token provided | http | error | fastapi, authentication, query-param, dependency, bigger-applications |
| X-Key header invalid | http | error | fastapi, authentication, dependency, header, dependencies-tutorial |
| Release notes already contain a section for | exception | error | release, validation, versioning |