Error map

ActionController::InvalidAuthenticityToken Rails: ActionController::InvalidAuthenticityToken (Can't verify CSRF token authenticity)

Ruby / Rails · layer 4, Application & API

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Centre: this error. First ring: errors it is linked with (6). Outer ring: what those are linked with. Colours show the layer of a request each error belongs to. Click any dot to re-centre the map on it; hover to follow its connections. The centre dot opens the error page.

2 · Network 4 · Application & API 5 · Data 6 · Platform & cloud
ActionController::InvalidAuthenticityToken — Rails: ActionController::InvalidAuthenticityToken (Can't verify CSRF token authenticity) (Ruby / Rails)ActionContr…ActiveRecord::PendingMigrationError — Rails: ActiveRecord::PendingMigrationError — Migrations are pending. To resolve this issue, run: bin/rails db:migrate (Ruby / Rails)ActiveRecord::Pendi…419 Page Expired — Laravel: 419 Page Expired (CSRF token mismatch) (PHP)419 Page ExpiredDjango CSRF — Forbidden (403) CSRF verification failed. Request aborted. (Python)Django CSRFstate mismatch — OAuth callback error: state mismatch / Unable to verify authorization request state / State cookie was missing (Authentication)state mismatchinvalid csrf token — ForbiddenError: invalid csrf token (EBADCSRFTOKEN) (Authentication)invalid csrf tokenundefined method for nil — Ruby: NoMethodError: undefined method `x' for nil (nil:NilClass) (Ruby / Rails)undefined method fo…1146 — MySQL ERROR 1146 (42S02): Table 'db.table' doesn't exist (MySQL)114642P01 — PostgreSQL: ERROR: relation "x" does not exist (PostgreSQL)42P011022 — MySQL ERROR 1022 (23000): Can't write; duplicate key in table (MySQL)1022403 — HTTP 403 Forbidden (HTTP)403No application encryption key — Laravel: No application encryption key has been specified. (PHP)No application encr…Target class does not exist — Laravel: Target class [App\Http\Controllers\X] does not exist. (PHP)Target class does n…Python not found — Python was not found; run without arguments to install from the Microsoft Store (Python)Python not foundDjango no such table — django.db.utils.OperationalError: no such table: app_model (Python)Django no such tableImproperlyConfigured — django.core.exceptions.ImproperlyConfigured: settings are not configured / SECRET_KEY must not be empty (Python)ImproperlyConfigured431 — HTTP 431 Request Header Fields Too Large (HTTP)431Cookies are blocked — WordPress login: Error: Cookies are blocked or not supported by your browser. You must enable cookies to use WordPress. (WordPress)Cookies are blockedlogin_required — OIDC Error: login_required / interaction_required / consent_required (silent authentication failed) (Authentication)login_requiredExpiredToken — AWS: ExpiredToken — The security token included in the request is expired (AWS)ExpiredToken401 — HTTP 401 Unauthorized (HTTP)401webhook signature — Webhook signature verification failed (Stripe, Razorpay, GitHub…) (API)webhook signature

Directly related (6)

ActiveRecord::PendingMigrationErrorRuby / Rails

Rails: ActiveRecord::PendingMigrationError — Migrations are pending. To resolve this issue, run: bin/rails db:migrate

The database schema is behind the migration files in the app.

419 Page ExpiredPHP

Laravel: 419 Page Expired (CSRF token mismatch)

Laravel rejected a POST because the CSRF token was missing, expired or didn’t match the session.

Django CSRFPython

Forbidden (403) CSRF verification failed. Request aborted.

Django rejected a POST because the CSRF token was missing, wrong, or the request origin isn’t trusted.

state mismatchAuthentication

OAuth callback error: state mismatch / Unable to verify authorization request state / State cookie was missing

The state value returned to the callback doesn’t match what the app stored before redirecting — the CSRF protection for OAuth fai…

invalid csrf tokenAuthentication

ForbiddenError: invalid csrf token (EBADCSRFTOKEN)

The request’s CSRF token is missing or doesn’t match the token tied to the user’s session/cookie.

undefined method for nilRuby / Rails

Ruby: NoMethodError: undefined method `x' for nil (nil:NilClass)

You called a method on nil — the object you expected (a record, hash value, param) wasn’t there.

Two steps away (15)

1146MySQL

MySQL ERROR 1146 (42S02): Table 'db.table' doesn't exist

The query references a table that MySQL can’t find in that database.

42P01PostgreSQL

PostgreSQL: ERROR: relation "x" does not exist

The table/view isn’t found — missing migration, wrong schema, or a case-sensitive quoted name.

1022MySQL

MySQL ERROR 1022 (23000): Can't write; duplicate key in table

An ALTER/CREATE produced a duplicate key or constraint name — often a foreign key name that already exists in the database.

403HTTP

HTTP 403 Forbidden

The server understood the request but refuses to authorize it — you (or the server process) are not allowed to access this resour…

No application encryption keyPHP

Laravel: No application encryption key has been specified.

Laravel’s APP_KEY is missing, so it can’t encrypt sessions and cookies.

Target class does not existPHP

Laravel: Target class [App\Http\Controllers\X] does not exist.

Laravel’s container couldn’t find the controller or class named in a route or binding.

Python not foundPython

Python was not found; run without arguments to install from the Microsoft Store

Windows ran the Microsoft Store “App execution alias” instead of a real Python installation.

Django no such tablePython

django.db.utils.OperationalError: no such table: app_model

Django queried a table that hasn’t been created — migrations missing or not applied.

ImproperlyConfiguredPython

django.core.exceptions.ImproperlyConfigured: settings are not configured / SECRET_KEY must not be empty

Django can’t load its settings — DJANGO_SETTINGS_MODULE unset, a required setting missing, or an environment variable not provide…

431HTTP

HTTP 431 Request Header Fields Too Large

The request headers — almost always cookies — exceed the server’s size limit.

Cookies are blockedWordPress

WordPress login: Error: Cookies are blocked or not supported by your browser. You must enable cookies to use WordPress.

WordPress’s test cookie wasn’t returned on login — often a siteurl/home or domain mismatch, caching of wp-login.php, or headers a…

login_requiredAuthentication

OIDC Error: login_required / interaction_required / consent_required (silent authentication failed)

A silent sign-in (prompt=none, iframe or refresh) couldn’t complete because the user must interact — no session, consent needed,…

ExpiredTokenAWS

AWS: ExpiredToken — The security token included in the request is expired

Temporary AWS credentials (STS/SSO/assumed role) have expired.

401HTTP

HTTP 401 Unauthorized

The request has no valid authentication credentials — you need to log in or send a valid token.

webhook signatureAPI

Webhook signature verification failed (Stripe, Razorpay, GitHub…)

Your endpoint computed a different HMAC signature than the one the provider sent, so the webhook is rejected.

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