Error map

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

PHP · layer 4, Application & API

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Centre: this error. First ring: errors it is linked with (7). 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
Target class does not exist — Laravel: Target class [App\Http\Controllers\X] does not exist. (PHP)Target clas…419 Page Expired — Laravel: 419 Page Expired (CSRF token mismatch) (PHP)419 Page ExpiredMassAssignmentException — Laravel: Illuminate\Database\Eloquent\MassAssignmentException: Add [x] to fillable property to allow mass assignment (Laravel)MassAssignmentExcep…No application encryption key — Laravel: No application encryption key has been specified. (PHP)No application encr…Class not found — PHP Fatal error: Uncaught Error: Class "X" not found (PHP)Class not foundLaravel table not found — Laravel: SQLSTATE[42S02]: Base table or view not found: 1146 Table 'db.sessions' doesn't exist (PHP)Laravel table not f…Laravel storage — Laravel: The stream or file "storage/logs/laravel.log" could not be opened in append mode: Failed to open stream: Permission denied (PHP)Laravel storageVite manifest not found — Laravel: Vite manifest not found at: public/build/manifest.json (PHP)Vite manifest not f…403 — HTTP 403 Forbidden (HTTP)403Django CSRF — Forbidden (403) CSRF verification failed. Request aborted. (Python)Django CSRFantiforgery token could not be decrypted — ASP.NET Core: The antiforgery token could not be decrypted / The required antiforgery cookie is not present (400 Bad Request) (.NET)antiforgery token c…Route [login] not defined — Laravel: Symfony\Component\Routing\Exception\RouteNotFoundException: Route [login] not defined (Laravel)Route [login] not d…The GET method is not supported for route — Laravel: The GET method is not supported for route x. Supported methods: POST (MethodNotAllowedHttpException) (Laravel)The GET method is n…open_basedir — Warning: file_exists(): open_basedir restriction in effect. File(/x) is not within the allowed path(s) (PHP)open_basedirPHP mail — PHP mail() returns false / emails not delivered (PHP)PHP mailUPLOAD_ERR_INI_SIZE — PHP upload error 1: The uploaded file exceeds the upload_max_filesize directive in php.ini (PHP)UPLOAD_ERR_INI_SIZECall to undefined function — PHP Fatal error: Uncaught Error: Call to undefined function (PHP)Call to undefined f…ModuleNotFoundError — ModuleNotFoundError: No module named 'x' (Python)ModuleNotFoundErrorClassNotFoundException — java.lang.ClassNotFoundException / NoClassDefFoundError (Java)ClassNotFoundExcept…1146 — MySQL ERROR 1146 (42S02): Table 'db.table' doesn't exist (MySQL)11461022 — MySQL ERROR 1022 (23000): Can't write; duplicate key in table (MySQL)10221061 — MySQL ERROR 1061 (42000): Duplicate key name 'x' (MySQL)1061EACCES — Linux: Permission denied (Linux)EACCESfailed to open stream — Warning: include(x.php): Failed to open stream: No such file or directory (PHP)failed to open stre…session save path — Warning: session_start(): open(/var/lib/php/sessions/sess_x, O_RDWR) failed: Permission denied (PHP)session save pathCOPY failed — COPY failed: file not found in build context / "/app/x": not found (Docker)COPY failedGradle wrapper main class — Error: Could not find or load main class org.gradle.wrapper.GradleWrapperMain (Java)Gradle wrapper main…ERR_OSSL_EVP_UNSUPPORTED — Error: error:0308010C:digital envelope routines::unsupported (Node.js)ERR_OSSL_EVP_UNSUPP…

Directly related (7)

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.

MassAssignmentExceptionLaravel

Laravel: Illuminate\Database\Eloquent\MassAssignmentException: Add [x] to fillable property to allow mass assignment

You passed an array to create()/update()/fill() containing a field that isn’t in the model’s $fillable list.

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.

Class not foundPHP

PHP Fatal error: Uncaught Error: Class "X" not found

PHP couldn’t load the class — autoloading failed, the namespace is wrong, or the dependency isn’t installed.

Laravel table not foundPHP

Laravel: SQLSTATE[42S02]: Base table or view not found: 1146 Table 'db.sessions' doesn't exist

Laravel queried a table that hasn’t been created — usually sessions, cache, jobs or a new model’s table.

Laravel storagePHP

Laravel: The stream or file "storage/logs/laravel.log" could not be opened in append mode: Failed to open stream: Permission denied

The web server can’t write to Laravel’s storage or bootstrap/cache directories.

Vite manifest not foundPHP

Laravel: Vite manifest not found at: public/build/manifest.json

Laravel’s @vite directive can’t find the compiled asset manifest because assets weren’t built.

Two steps away (20)

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…

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.

antiforgery token could not be decrypted.NET

ASP.NET Core: The antiforgery token could not be decrypted / The required antiforgery cookie is not present (400 Bad Request)

Form POST failed antiforgery validation — the token is missing, the cookie is missing, or Data Protection keys changed so old tok…

Route [login] not definedLaravel

Laravel: Symfony\Component\Routing\Exception\RouteNotFoundException: Route [login] not defined

Code called route('name') for a route name that doesn’t exist — very often route('login') from the auth middleware in API-only ap…

The GET method is not supported for routeLaravel

Laravel: The GET method is not supported for route x. Supported methods: POST (MethodNotAllowedHttpException)

The URL exists, but not for the HTTP method used — e.g. opening a POST-only route in the browser, or a form sending GET.

open_basedirPHP

Warning: file_exists(): open_basedir restriction in effect. File(/x) is not within the allowed path(s)

PHP is configured to access only certain directories, and the script tried to touch a file outside them.

PHP mailPHP

PHP mail() returns false / emails not delivered

PHP’s mail() function failed or emails never arrive (spam or rejected).

UPLOAD_ERR_INI_SIZEPHP

PHP upload error 1: The uploaded file exceeds the upload_max_filesize directive in php.ini

The uploaded file is bigger than PHP’s upload_max_filesize, so PHP discarded it.

Call to undefined functionPHP

PHP Fatal error: Uncaught Error: Call to undefined function

PHP can’t find the function you called — usually a missing extension, missing include, or namespace issue.

ModuleNotFoundErrorPython

ModuleNotFoundError: No module named 'x'

Python can’t find the module you import — it isn’t installed in the interpreter/virtualenv that’s running, or the import path is…

ClassNotFoundExceptionJava

java.lang.ClassNotFoundException / NoClassDefFoundError

The JVM couldn’t find a class on the classpath at runtime.

1146MySQL

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

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

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.

1061MySQL

MySQL ERROR 1061 (42000): Duplicate key name 'x'

CREATE INDEX/ADD INDEX used an index name that already exists on the table.

EACCESLinux

Linux: Permission denied

Your user (or the service user) lacks read/write/execute permission on a file, directory or one of its parents.

failed to open streamPHP

Warning: include(x.php): Failed to open stream: No such file or directory

PHP couldn’t open a file for include/require/fopen — wrong path, missing file, or no permission.

session save pathPHP

Warning: session_start(): open(/var/lib/php/sessions/sess_x, O_RDWR) failed: Permission denied

PHP can’t write session files to the configured session.save_path.

COPY failedDocker

COPY failed: file not found in build context / "/app/x": not found

The Dockerfile COPY refers to a path outside the build context, excluded by .dockerignore, or relative to the wrong directory.

Gradle wrapper main classJava

Error: Could not find or load main class org.gradle.wrapper.GradleWrapperMain

The Gradle wrapper JAR (gradle/wrapper/gradle-wrapper.jar) is missing or corrupt.

ERR_OSSL_EVP_UNSUPPORTEDNode.js

Error: error:0308010C:digital envelope routines::unsupported

An old build tool (webpack 4, old react-scripts) uses a hash algorithm that OpenSSL 3 in Node 17+ disables.

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