[ERROR] java.lang.RuntimeException: org.apache.axis2.AxisFault: Mapping qname not fond for the package: org.hibernate.collection
org.apache.axiom.om.OMException: java.lang.RuntimeException: org.apache.axis2.AxisFault: Mapping qname not fond for the package: org.hibernate.collection
    at org.apache.axiom.om.impl.builder.StAXOMBuilder.next(StAXOMBuilder.java:249)
    at org.apache.axiom.om.impl.llom.OMNodeImpl.build(OMNodeImpl.java:327)
    at org.apache.axiom.om.impl.llom.OMElementImpl.build(OMElementImpl.java:706)
    at org.apache.axiom.om.impl.llom.OMElementImpl.detach(OMElementImpl.java:675)
    at org.apache.axiom.om.impl.llom.OMNodeImpl.setParent(OMNodeImpl.java:124)
    at org.apache.axiom.om.impl.llom.OMElementImpl.addChild(OMElementImpl.java:274)
    at org.apache.axiom.om.impl.llom.OMElementImpl.addChild(OMElementImpl.java:203)
    at org.apache.axiom.soap.impl.llom.SOAPBodyImpl.addChild(SOAPBodyImpl.java:231)
    at org.apache.axis2.rpc.receivers.RPCUtil.processResponseAsDocLitWrapped(RPCUtil.java:422)
    at org.apache.axis2.rpc.receivers.RPCMessageReceiver.invokeBusinessLogic(RPCMessageReceiver.java:138)
    at org.apache.axis2.receivers.AbstractInOutMessageReceiver.invokeBusinessLogic(AbstractInOutMessageReceiver.java:40)
    at org.apache.axis2.receivers.AbstractMessageReceiver.receive(AbstractMessageReceiver.java:100)
    at org.apache.axis2.engine.AxisEngine.receive(AxisEngine.java:176)
    at org.apache.axis2.transport.http.HTTPTransportUtils.processHTTPPostRequest(HTTPTransportUtils.java:275)
    at org.apache.axis2.transport.http.AxisServlet.doPost(AxisServlet.java:133)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at org.springframework.orm.hibernate3.support.OpenSessionInViewFilter.doFilterInternal(OpenSessionInViewFilter.java:198)
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:291)
    at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:859)
    at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:602)
    at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
    at java.lang.Thread.run(Unknown Source)

package com.rui.businessactivities.service.impl;

import java.util.List;

import com.rui.businessactivities.dao.ActivityDao;
import com.rui.businessactiv