what could be the solution to cxf aegis error shown below:
 java.lang.RuntimeException: org.apache.cxf.aegis.DatabindingException: Error 
writing document.. Nested exception is com.ctc.wstx.exc.WstxIOException: 
null  at 
org.apache.cxf.aegis.databinding.XMLStreamDataWriter.write(XMLStreamDataWriter.java:115)  at
 
org.apache.cxf.aegis.databinding.XMLStreamDataWriter.write(XMLStreamDataWriter.java:48)  at
 
org.apache.cxf.interceptor.AbstractOutDatabindingInterceptor.writeParts(AbstractOutDatabindingInterceptor.java:120)  at
 
org.apache.cxf.interceptor.BareOutInterceptor.handleMessage(BareOutInterceptor.java:68)  at
 
org.apache.cxf.phase.PhaseInterceptorChain.doIntercept(PhaseInterceptorChain.java:243)  at
 
org.apache.cxf.interceptor.OutgoingChainInterceptor.handleMessage(OutgoingChainInterceptor.java:76)  at
 
org.apache.cxf.phase.PhaseInterceptorChain.doIntercept(PhaseInterceptorChain.java:243)  at
 
org.apache.cxf.transport.ChainInitiationObserver.onMessage(ChainInitiationObserver.java:110)  at
 
org.apache.cxf.transport.servlet.ServletDestination.invoke(ServletDestination.java:98)  at
 
org.apache.cxf.transport.servlet.ServletController.invokeDestination(ServletController.java:423)  at
 
org.apache.cxf.transport.servlet.ServletController.invoke(ServletController.java:178)  at
 
org.apache.cxf.transport.servlet.AbstractCXFServlet.invoke(AbstractCXFServlet.java:142)  at
 
org.apache.cxf.transport.servlet.AbstractHTTPServlet.handleRequest(AbstractHTTPServlet.java:179)  at
 
org.apache.cxf.transport.servlet.AbstractHTTPServlet.doPost(AbstractHTTPServlet.java:103)  at
 javax.servlet.http.HttpServlet.service(HttpServlet.java:637)  at 
org.apache.cxf.transport.servlet.AbstractHTTPServlet.service(AbstractHTTPServlet.java:159)  at
 org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:487)  at 
org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1097)  at
 
org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:378)  at
 
org.springframework.security.intercept.web.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:109)  at
 
org.springframework.security.intercept.web.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:83)  at
 
org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:390)  at
 
org.springframework.security.ui.SessionFixationProtectionFilter.doFilterHttp(SessionFixationProtectionFilter.java:52)  at
 
org.springframework.security.ui.SpringSecurityFilter.doFilter(SpringSecurityFilter.java:53)  at
 
org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:390)  at
 
org.springframework.security.ui.ExceptionTranslationFilter.doFilterHttp(ExceptionTranslationFilter.java:101)  at
 
org.springframework.security.ui.SpringSecurityFilter.doFilter(SpringSecurityFilter.java:53)  at
 
org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:390)  at
 
org.springframework.security.providers.anonymous.AnonymousProcessingFilter.doFilterHttp(AnonymousProcessingFilter.java:105)  at
 
org.springframework.security.ui.SpringSecurityFilter.doFilter(SpringSecurityFilter.java:53)  at
 
org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:390)  at
 
org.springframework.security.ui.rememberme.RememberMeProcessingFilter.doFilterHttp(RememberMeProcessingFilter.java:109)  at
 
org.springframework.security.ui.SpringSecurityFilter.doFilter(SpringSecurityFilter.java:53)  at
 
org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:390)  at
 
org.springframework.security.wrapper.SecurityContextHolderAwareRequestFilter.doFilterHttp(SecurityContextHolderAwareRequestFilter.java:91)  at
 
org.springframework.security.ui.SpringSecurityFilter.doFilter(SpringSecurityFilter.java:53)  at
 
org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:390)  at
 
org.springframework.security.ui.basicauth.BasicProcessingFilter.doFilterHttp(BasicProcessingFilter.java:174)  at
 
org.springframework.security.ui.SpringSecurityFilter.doFilter(SpringSecurityFilter.java:53)  at
 
org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:390)  at
 
org.springframework.security.ui.AbstractProcessingFilter.doFilterHttp(AbstractProcessingFilter.java:278)  at
 
org.springframework.security.ui.SpringSecurityFilter.doFilter(SpringSecurityFilter.java:53)  at
 
org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:390)  at
 
org.springframework.security.ui.logout.LogoutFilter.doFilterHttp(LogoutFilter.java:89)  at
 
org.springframework.security.ui.SpringSecurityFilter.doFilter(SpringSecurityFilter.java:53)  at
 
org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:390)  at
 
org.springframework.security.context.HttpSessionContextIntegrationFilter.doFilterHttp(HttpSessionContextIntegrationFilter.java:235)  at
 
org.springframework.security.ui.SpringSecurityFilter.doFilter(SpringSecurityFilter.java:53)  at
 
org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:390)  at
 
org.springframework.security.util.FilterChainProxy.doFilter(FilterChainProxy.java:175)  at
 
org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:183)  at
 
org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:138)  at
 
org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1088)  at
 
org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:96)  at
 
org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:75)  at
 
org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1088)  at
 org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:360)  at 
org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)  at 
org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:181)  at 
org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:729)  at 
org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:405)  at
 org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)  at 
org.mortbay.jetty.handler.RequestLogHandler.handle(RequestLogHandler.java:49)  at
 org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)  at 
org.mortbay.jetty.Server.handle(Server.java:324)  at 
org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:505)  at 
org.mortbay.jetty.HttpConnection$RequestHandler.content(HttpConnection.java:843)  at
 org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:647)  at 
org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:211)  at 
org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:380)  at 
org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:395)  at
 
org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:488) Caused
 by: org.apache.cxf.aegis.DatabindingException: Error writing document.. Nested 
exception is com.ctc.wstx.exc.WstxIOException:
 null  at 
org.apache.cxf.aegis.xml.stax.ElementWriter.close(ElementWriter.java:167)  at 
org.apache.cxf.aegis.type.basic.BeanType.writeObjectInternal(BeanType.java:387)  at
 org.apache.cxf.aegis.type.basic.BeanType.writeObject(BeanType.java:320)  at 
org.apache.cxf.aegis.type.basic.ArrayType.writeValue(ArrayType.java:263)  at 
org.apache.cxf.aegis.type.collection.CollectionType.writeObject(CollectionType.java:121)  at
 org.apache.cxf.aegis.type.basic.BeanType.writeElement(BeanType.java:396)  at 
org.apache.cxf.aegis.type.basic.BeanType.writeObjectInternal(BeanType.java:380)  at
 org.apache.cxf.aegis.type.basic.BeanType.writeObject(BeanType.java:320)  at 
org.apache.cxf.aegis.type.basic.BeanType.writeElement(BeanType.java:396)  at 
org.apache.cxf.aegis.type.basic.BeanType.writeObjectInternal(BeanType.java:380)  at
 org.apache.cxf.aegis.type.basic.BeanType.writeObject(BeanType.java:320)  at
 org.apache.cxf.aegis.type.basic.ArrayType.writeValue(ArrayType.java:263)  at 
org.apache.cxf.aegis.type.collection.CollectionType.writeObject(CollectionType.java:121)  at
 org.apache.cxf.aegis.type.basic.BeanType.writeElement(BeanType.java:396)  at 
org.apache.cxf.aegis.type.basic.BeanType.writeObjectInternal(BeanType.java:380)  at
 org.apache.cxf.aegis.type.basic.BeanType.writeObject(BeanType.java:320)  at 
org.apache.cxf.aegis.type.basic.BeanType.writeElement(BeanType.java:396)  at 
org.apache.cxf.aegis.type.basic.BeanType.writeObjectInternal(BeanType.java:380)  at
 org.apache.cxf.aegis.type.basic.BeanType.writeObject(BeanType.java:320)  at 
org.apache.cxf.aegis.type.basic.ArrayType.writeValue(ArrayType.java:263)  at 
org.apache.cxf.aegis.type.collection.CollectionType.writeObject(CollectionType.java:121)  at
 org.apache.cxf.aegis.type.basic.BeanType.writeElement(BeanType.java:396)  at
 
org.apache.cxf.aegis.type.basic.BeanType.writeObjectInternal(BeanType.java:380)  at
 org.apache.cxf.aegis.type.basic.BeanType.writeObject(BeanType.java:320)  at 
org.apache.cxf.aegis.type.basic.BeanType.writeElement(BeanType.java:396)  at 
org.apache.cxf.aegis.type.basic.BeanType.writeObjectInternal(BeanType.java:380)  at
 org.apache.cxf.aegis.type.basic.BeanType.writeObject(BeanType.java:320)  at 
org.apache.cxf.aegis.type.basic.ArrayType.writeValue(ArrayType.java:263)  at 
org.apache.cxf.aegis.type.collection.CollectionType.writeObject(CollectionType.java:121)  at
 org.apache.cxf.aegis.type.basic.BeanType.writeElement(BeanType.java:396)
Jonathan

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