Fatal error: Uncaught Error: Interface "GuzzleHttp\ClientInterface" not found in /home/cvpchat/public_html/websocket/vendor/kreait/firebase-php/src/Firebase/Database/ApiClient.php:20 Stack trace: #0 {main} thrown in /home/cvpchat/public_html/websocket/vendor/kreait/firebase-php/src/Firebase/Database/ApiClient.php on line 20