Fatal error: Uncaught Error: Class "Routeguide\RouteGuideStub" not found in /var/www/usonboard.com/grpc/examples/php/route_guide/RouteGuideService.php:21 Stack trace: #0 {main} thrown in /var/www/usonboard.com/grpc/examples/php/route_guide/RouteGuideService.php on line 21