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

Call Stack:
    0.0007     262184   1. {main}() /var/www/html/dev/spa/vendor/laravel/framework/src/Illuminate/Database/DatabaseManager.php:0