Fatal error: Uncaught Error: Interface "Illuminate\Database\ConnectionInterface" not found in /var/www/html/invoice-backendOLD/vendor/laravel/framework/src/Illuminate/Database/Connection.php:25 Stack trace: #0 {main} thrown in /var/www/html/invoice-backendOLD/vendor/laravel/framework/src/Illuminate/Database/Connection.php on line 25