Fatal error: Class 'Illuminate\Database\Connection' not found in /var/www/html/dev/spa/vendor/laravel/framework/src/Illuminate/Database/MySqlConnection.php on line 8

Call Stack:
    0.0005     238536   1. {main}() /var/www/html/dev/spa/vendor/laravel/framework/src/Illuminate/Database/MySqlConnection.php:0