Fatal error: Uncaught Error: Class "Illuminate\Filesystem\FilesystemAdapter" not found in /var/www/html/app/vendor/laravel/framework/src/Illuminate/Filesystem/LocalFilesystemAdapter.php:9 Stack trace: #0 {main} thrown in /var/www/html/app/vendor/laravel/framework/src/Illuminate/Filesystem/LocalFilesystemAdapter.php on line 9