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java.util.ConcurrentModificationException: 	at java.util.HashMap$HashIterator.nextEntry(HashMap.java:910)	at java.util.HashMap$KeyIterator.next(HashMap.java:945)	at java.util.Collections$1.nextElement(Collections.java:3389)	at java.util.Collections.list(Collections.java:3412)	at com.icesoft.faces.context.AbstractCopyingAttributeMap.clear(AbstractCopyingAttributeMap.java:41)	at com.icesoft.faces.context.BridgeExternalContext.dispose(BridgeExternalContext.java:212)	at com.icesoft.faces.context.View$6.servlet(View.java:109)	at com.icesoft.faces.webapp.http.servlet.ServletRequestResponse.detectEnvironment(ServletRequestResponse.java:203)	at com.icesoft.faces.context.View.updateOnRequest(View.java:105)	at com.icesoft.faces.webapp.http.core.SingleViewServer.service(SingleViewServer.java:43)	at com.icesoft.faces.webapp.http.common.standard.PathDispatcherServer$Matcher.serviceOnMatch(PathDispatcherServer.java:50)	at com.icesoft.faces.webapp.http.common.standard.PathDispatcherServer.service(PathDispatcherServer.java:19)	at com.icesoft.faces.webapp.http.servlet.ThreadBlockingAdaptingServlet.service(ThreadBlockingAdaptingServlet.java:19)	at com.icesoft.faces.webapp.http.servlet.EnvironmentAdaptingServlet.service(EnvironmentAdaptingServlet.java:29)	at com.icesoft.faces.webapp.http.servlet.MainSessionBoundServlet.service(MainSessionBoundServlet.java:117)	at com.icesoft.faces.webapp.http.servlet.SessionDispatcher.service(SessionDispatcher.java:37)	at com.icesoft.faces.webapp.http.servlet.PathDispatcher$Matcher.serviceOnMatch(PathDispatcher.java:52)	at com.icesoft.faces.webapp.http.servlet.PathDispatcher.service(PathDispatcher.java:29)	at com.icesoft.faces.webapp.http.servlet.MainServlet.service(MainServlet.java:76)	at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)	at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:226)	at weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:124)	at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:283)	at weblogic.servlet.internal.TailFilter.doFilter(TailFilter.java:26)	at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:42)	at org.jboss.seam.web.ExceptionFilter.doFilter(ExceptionFilter.java:64)	at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:42)	at weblogic.servlet.internal.RequestEventsFilter.doFilter(RequestEventsFilter.java:26)	at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:42)	at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:3393)	at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321)	at weblogic.security.service.SecurityManager.runAs(Unknown Source)	at weblogic.servlet.internal.WebAppServletContext.securedExecute(WebAppServletContext.java:2140)	at weblogic.servlet.internal.WebAppServletContext.execute(WebAppServletContext.java:2046)	at weblogic.servlet.internal.ServletRequestImpl.run(ServletRequestImpl.java:1366)	at weblogic.work.ExecuteThread.execute(ExecuteThread.java:200)	at weblogic.work.ExecuteThread.run(ExecuteThread.java:172)