Error description: CHECK license-This feature is not available. A valid license is required to use it. cannot connect to license sever system.the license sever manager(lmgrd) has not been started yet, the wrong port@host or license file is being used, or the port or hostname in the license file has been changed. 这样运行错误是什么原因?该怎么处理呢?提前谢谢大家!