[Open] MockAsWarServlet Null Exception

How to catch this exception?

This happens while I test my service sending null values.

After some time this leads to Out of memory exception and freeze my server.

any solution?

Apr 4, 2013 10:18:41 AM com.eviware.soapui.mockaswar.MockAsWarServlet service
SEVERE: null
com.eviware.soapui.impl.wsdl.mock.DispatchException: java.io.IOException: Invalid chunk header
        at com.eviware.soapui.impl.wsdl.mock.WsdlMockRunner.dispatchRequest(WsdlMockRunner.java:388)
        at com.eviware.soapui.mockaswar.MockAsWarProServlet$MockServletSoapUIProCore.dispatchRequest(SourceFile:92)
        at com.eviware.soapui.mockaswar.MockAsWarServlet.service(MockAsWarServlet.java:190)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
        at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
        at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
        at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
        at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
        at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
        at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293)
        at org.apache.coyote.http11.Http11AprProcessor.process(Http11AprProcessor.java:879)
        at org.apache.coyote.http11.Http11AprProtocol$Http11ConnectionHandler.process(Http11AprProtocol.java:600)
        at org.apache.tomcat.util.net.AprEndpoint$Worker.run(AprEndpoint.java:1703)
        at java.lang.Thread.run(Unknown Source)
Caused by: java.io.IOException: Invalid chunk header
        at org.apache.coyote.http11.filters.ChunkedInputFilter.doRead(ChunkedInputFilter.java:156)
        at org.apache.coyote.http11.InternalAprInputBuffer.doRead(InternalAprInputBuffer.java:738)
        at org.apache.coyote.Request.doRead(Request.java:427)
        at org.apache.catalina.connector.InputBuffer.realReadBytes(InputBuffer.java:304)
        at org.apache.tomcat.util.buf.ByteChunk.substract(ByteChunk.java:419)
        at org.apache.catalina.connector.InputBuffer.read(InputBuffer.java:327)
        at org.apache.catalina.connector.CoyoteInputStream.read(CoyoteInputStream.java:193)
        at com.eviware.soapui.support.Tools.readAndWrite(Tools.java:248)
        at com.eviware.soapui.support.Tools.readAll(Tools.java:229)
        at com.eviware.soapui.impl.wsdl.mock.WsdlMockRequest.readRequestContent(WsdlMockRequest.java:202)
        at com.eviware.soapui.impl.wsdl.mock.WsdlMockRequest.initPostRequest(WsdlMockRequest.java:123)
        at com.eviware.soapui.impl.wsdl.mock.WsdlMockRequest.<init>(WsdlMockRequest.java:107)
        at com.eviware.soapui.impl.wsdl.mock.WsdlMockRunner.dispatchRequest(WsdlMockRunner.java:368)
        ... 15 more