Fatal error: Uncaught Error: Class "Google\ApiCore\RequestBuilder" not found in /opt/lampp/htdocs/msjwebcp/vendor/google/gax/src/InsecureRequestBuilder.php:11 Stack trace: #0 {main} thrown in /opt/lampp/htdocs/msjwebcp/vendor/google/gax/src/InsecureRequestBuilder.php on line 11