target server does not expose service

Question

I'm building a grpc Server in java and added a few services as shown below. I ran a debugger which showed that all the services seem to be there in the server object, yet when I make a grpcurl request, one of the services (pkServiceRefactored) doesn't respond to my query. The other services work fine and I don't know why only one fails to work

Server server = ServerBuilder.forPort(port).addService(pnlGRPCService).addService(pnlGRPCServiceRefactored)
                .addService(ProtoReflectionService.newInstance())
                .addService(pkService).addService(pkServiceRefactored).build();