Exception occured during code generation : null WEB services

Good evening guys. I am keep getting the error related to web services. I am trying to add wsdl file from url on eclipse http://localhost:50245/WebService_Client.asmx?wsdl.

This web service is created on C#, unfortunately, I have to consume those web services on eclipse. That is the requirement for the project. How could I solve this error?

EDIT: web services are made public but error still occurs

Here is the image of how the error looks like.