初始化是成功的，每一个tick都会报这个问题。

-! 08/04/25 20:26:49.903 warning: dispatch exception: d:\soft\ice-3.7.8\cpp\src\

ice\inputstream.cpp:2696: ::Ice::MarshalException:

  protocol error: error during marshaling or unmarshaling:

  index for class received, but no instance

  identity: 4666be6f-d751-46e9-9f67-a97b7ee3d067

  facet:

  operation: onPositionSnapshot

  remote host: 127.0.0.1 remote port: 50993