Redmine

Hi

I have installed the open meeting plugin in redmine. I have also enabled the conference tab. when i click the conference tab Its showing 500 internal server error

My redmine version is 2.3.1

ERROR LOG IS:

SOAP::FaultError (The service cannot be found for the endpoint reference (EPR) http://xx.xx.xx.xxx:5080/openmeetings//services/UserService):
#<SOAP::Mapping::Object:0x007ffa563471c0>

Please help me

Thanks
Zam