Fatal error: Uncaught Error: Class "Grpc\BaseStub" not found in /var/www/usonboard.com/grpc/src/php/tests/interop/Grpc/Testing/TestServiceClient.php:28
Stack trace:
#0 {main}
thrown in /var/www/usonboard.com/grpc/src/php/tests/interop/Grpc/Testing/TestServiceClient.php on line 28