Fatal error: Uncaught Error: Interface "Google\ApiCore\ServerStreamingCallInterface" not found in /opt/lampp/htdocs/msjwebcp/vendor/google/gax/src/Transport/Grpc/ServerStreamingCallWrapper.php:43 Stack trace: #0 {main} thrown in /opt/lampp/htdocs/msjwebcp/vendor/google/gax/src/Transport/Grpc/ServerStreamingCallWrapper.php on line 43