Method threw 'org.apache.axiom.om.OMException' exception. Cannot evaluate org.apache.axiom.om.impl.llom.OMSourcedElementImpl.toString()

Question

I generated a clinet using Axis 2 JAXBRI. I got different objects, ObjectFactory, Stub and CallbackHandler.

I started making a request but I get an error adding the header, namely the following lines: factory.createOMElement(new org.apache.axiom.om.ds.jaxb.JAXBOMDataSource(wsContext, param));

Added also this dependency (Java client Axis2 OMException) but not working.

Exception (click)

Also, I have to sign this request with certificates, if someone has an article, I will be glad.

If someone can help, I can add on skype and talk.