Fatal error: Uncaught Error: Interface "Illuminate\Contracts\Auth\UserProvider" not found in /var/www/html/usophy/vendor/laravel/framework/src/Illuminate/Auth/EloquentUserProvider.php:12 Stack trace: #0 {main} thrown in /var/www/html/usophy/vendor/laravel/framework/src/Illuminate/Auth/EloquentUserProvider.php on line 12