Fatal error: Uncaught Error: Interface "WSSC\Contracts\CommonsContract" not found in C:\xampp\htdocs\cms-propay\vendor\arthurkushman\php-wss\src\Components\WssMain.php:17 Stack trace: #0 {main} thrown in C:\xampp\htdocs\cms-propay\vendor\arthurkushman\php-wss\src\Components\WssMain.php on line 17