Fatal error: Uncaught Error: Interface "CoinGate\ClientInterface" not found in C:\xampp\htdocs\cms-propay\vendor\coingate\coingate-php\lib\BaseClient.php:29 Stack trace: #0 {main} thrown in C:\xampp\htdocs\cms-propay\vendor\coingate\coingate-php\lib\BaseClient.php on line 29