Im trying to cosnume a webservice using as reference the o11 documentation, but im getting this message every time I try to call an action.

System.ServiceModel.FaultException: No such operation: null (HTTP GET PATH_INFO: /webservices/servicenamenull)

I've tried this same api using postman, soapui and a simple python program and im not having troubles so far.

Any ideas of what could be happening?