Fatal error: Uncaught Error: Class "Illuminate\Http\Middleware\ValidatePostSize" not found in /var/www/html/app/vendor/laravel/framework/src/Illuminate/Foundation/Http/Middleware/ValidatePostSize.php:7 Stack trace: #0 {main} thrown in /var/www/html/app/vendor/laravel/framework/src/Illuminate/Foundation/Http/Middleware/ValidatePostSize.php on line 7