Fatal error: Interface 'Illuminate\Auth\UserProviderInterface' not found in /var/www/html/dev/spa/vendor/laravel/framework/src/Illuminate/Auth/DatabaseUserProvider.php on line 6

Call Stack:
    0.0007     244624   1. {main}() /var/www/html/dev/spa/vendor/laravel/framework/src/Illuminate/Auth/DatabaseUserProvider.php:0