ErrLookup › tiangolo/fastapi

tiangolo/fastapi

FastAPI framework, high performance, easy to learn, fast to code, ready for production · Python · 533 source files

Analyzed at 42a41db11f on 2026-08-04. 73 documented errors.

Code / MessageTypeSeverityTags
Invalid X-Token header
http error fastapi, authentication, http-headers, httpexception
Item not found
http error fastapi, not-found, httpexception, rest
Item already exists
http error fastapi, conflict, duplicate, httpexception
Invalid X-Token header
http error fastapi, authentication, http-headers, httpexception
Item not found
http error fastapi, not-found, httpexception, rest
Item already exists
http error fastapi, conflict, duplicate, httpexception
X-Token header invalid
http error fastapi, authentication, dependencies, http-headers
No Jessica token provided
http error fastapi, authentication, query-params, dependencies
Item not found
http error fastapi, not-found, httpexception, rest
You can only update the item: plumbus
http error fastapi, forbidden, authorization, business-rule
{"errors": exc.errors(), "body": body.decode()}
http error fastapi, validation, pydantic, custom-route
{"errors": exc.errors(), "body": body.decode()}
http error fastapi, validation, pydantic, custom-route
X-Token header invalid
http error fastapi, authentication, dependencies, http-headers
X-Key header invalid
http error fastapi, authentication, dependencies, http-headers
X-Token header invalid
http error fastapi, authentication, dependencies, http-headers
X-Key header invalid
http error fastapi, authentication, dependencies, http-headers
Owner error: {e}
http error fastapi, dependencies, authorization, exception-handling
Item not found
http error fastapi, not-found, httpexception, rest
{username}
exception error fastapi, dependencies, authorization, yield-dependency, http-400
Owner error: {e}
http error fastapi, dependencies, http-400, authorization, yield-dependency
Item not found
http error fastapi, http-404, not-found, dependencies
{username}
exception error fastapi, dependencies, authorization, yield-dependency, http-400
Item not found, there's only a plumbus here
http error fastapi, http-404, not-found, dependencies, yield-dependency
Item not found, there's only a plumbus here
http error fastapi, http-404, not-found, dependencies
Item not found, there's only a plumbus here
http error fastapi, http-404, not-found, dependencies, yield-dependency
Item not found, there's only a plumbus here
http error fastapi, http-404, not-found, dependencies
X-Token header invalid
http error fastapi, authentication, headers, global-dependency, http-400
X-Key header invalid
http error fastapi, authentication, headers, global-dependency, http-400
X-Token header invalid
http error fastapi, authentication, headers, global-dependency, http-400
X-Key header invalid
http error fastapi, authentication, headers, global-dependency, http-400
Not authorized
http error fastapi, authorization, sqlmodel, http-403, dependencies
Not authorized
http error fastapi, authorization, sqlmodel, http-403, dependencies, session-management
Item not found
http error fastapi, http-404, not-found, handling-errors
Item not found
http error fastapi, http-404, custom-headers, handling-errors
Oops! {exc.name} did something. There goes a rainbow...
http warning fastapi, custom-exception, exception-handler, http-418, handling-errors
Nope! I don't like 3.
http warning fastapi, http-418, handling-errors, custom-handler, path-params
Nope! I don't like 3.
http warning fastapi, http-418, handling-errors, custom-handler, logging
Invalid YAML
http error fastapi, yaml, http-422, validation, request-body, openapi-extra
e.errors(include_url=False)
http error pydantic, validation, yaml, fastapi, pydantic-v2
Invalid ID format, it must start with "isbn-" or "imdb-"
validation error validation, query-params, aftervalidator, pydantic, fastapi
Not authenticated
http error authentication, oauth2, bearer, security, fastapi
Inactive user
http error authorization, security, user-management, fastapi
Incorrect username or password
http error authentication, oauth2, login, security, fastapi
Not authenticated
http error authentication, oauth2, bearer, security, fastapi
Inactive user
http error authorization, security, user-management, fastapi
Incorrect username or password
http error authentication, oauth2, login, security, fastapi
Inactive user
http error authorization, security, jwt, user-management, fastapi
Incorrect username or password
http error authentication, oauth2, login, jwt, security, fastapi
Inactive user
http error authorization, security, jwt, user-management, fastapi
Incorrect username or password
http error authentication, oauth2, login, jwt, security, fastapi
Not enough permissions
http error authorization, oauth2, scopes, security, fastapi
Inactive user
http error authorization, security, jwt, user-management, fastapi
Incorrect username or password
http error authentication, oauth2, login, jwt, scopes, security, fastapi
Not enough permissions
http error authorization, oauth2, scopes, security, fastapi
Inactive user
http error authorization, security, jwt, user-management, fastapi
Incorrect username or password
http error authentication, oauth2, login, jwt, scopes, security, fastapi
To use the fastapi command, please install "fastapi[standard
console critical cli, installation, fastapi-standard, runtime-error, packaging
Expected UploadFile, received: {type(__input_value)}
validation error uploadfile, pydantic, validation, multipart, fastapi
Form data requires "python-multipart" to be installed. It se
exception critical multipart, forms, installation, packaging, fastapi
Form data requires "python-multipart" to be installed. You
exception critical multipart, forms, installation, packaging, fastapi
The dependency "{call_name}" has a scope of "request", it ca
exception error dependencies, scope, di, generator, fastapi
pydantic.v1 models are no longer supported by FastAPI. Pleas
exception error pydantic, pydantic-v2, migration, encoders, fastapi
Response not awaited. There's a high chance that the applica
exception error dependencies, yield, exception-handling, async
A frontend path cannot be empty
exception error frontend, routing, configuration, static-files
A frontend path must start with '/'
exception error frontend, routing, configuration
Frontend directory '{directory}' does not exist. Resolved ab
exception error frontend, static-files, filesystem, configuration
Frontend fallback file '{fallback}' does not exist in direct
exception error frontend, static-files, fallback, configuration
fallback must be 'auto', 'index.html', '404.html', or None
exception error frontend, configuration, validation
Prefix and path cannot be both empty (path operation: {name}
exception error routing, include-router, configuration
SSE '{field_name}' must be a single line
validation error sse, server-sent-events, validation
SSE 'id' must not contain null characters
validation error sse, server-sent-events, validation, input-sanitization
Cannot set both 'data' and 'raw_data' on the same ServerSent
validation error sse, server-sent-events, validation
pydantic.v1 models are no longer supported by FastAPI. Pleas
exception error pydantic, migration, response-model, version-compat