Class "App\Models\X" not found Laravel Origin: Application & API Last updated 4 Nov 2026

Laravel: Error: Class "App\Models\Post" not found

PHP can't find the class you referenced — a missing import, wrong namespace or file name, or a stale autoloader.

Exact message you may see Class "App\Models\Post" not foundError: Class "App\Models\User" not foundClass 'App\Post' not foundClass "App\Http\Controllers\HomeController" does not existIlluminate\Contracts\Container\BindingResolutionException: Target class does not exist
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Seen on: Laravel PHP

Meaning

Class names, namespaces and file paths must agree (PSR-4: App\Models\Post lives in app/Models/Post.php). On Linux file names are case-sensitive, which breaks code written on macOS/Windows. After adding classes or moving files, run composer dump-autoload.

Common causes

  • Missing use App\Models\Post; or wrong namespace in the file
  • File name case differs from the class name (Linux)
  • Class moved without updating namespaces
  • Autoloader not regenerated
  • Model in App\ after upgrading to Laravel 8+ (App\Models)

⚡ Quick fix

  1. Check the namespace line and file path match
  2. composer dump-autoload
  3. Add the correct use statement

Detailed fix by platform

Laravel

  1. composer dump-autoload -o && php artisan optimize:clear

How to diagnose

  1. Namespace — Matches path?
  2. Case — Same on disk?
  3. Autoload — Regenerated?

🔧 Still not fixed?

Many errors look alike. If the steps above didn’t solve it, one of these is probably what you’re facing:

Where this error sits

Origin: Application & API. Errors that are often confused with or caused by this one (click to open):

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