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java.lang.NullPointerException: 	at java.util.regex.Matcher.getTextLength(Matcher.java:1234)	at java.util.regex.Matcher.reset(Matcher.java:308)	at java.util.regex.Matcher.(Matcher.java:228)	at java.util.regex.Pattern.matcher(Pattern.java:1088)	at org.kuali.kpme.core.assignment.AssignmentDescriptionKey.get(AssignmentDescriptionKey.java:34)	at org.kuali.kpme.tklm.time.clock.web.ClockAction.execute(ClockAction.java:160)	at org.kuali.rice.kns.web.struts.action.KualiRequestProcessor$1.doInTransaction(KualiRequestProcessor.java:491)	at org.springframework.transaction.support.TransactionTemplate.execute(TransactionTemplate.java:130)	at org.kuali.rice.kns.web.struts.action.KualiRequestProcessor.processActionPerform(KualiRequestProcessor.java:487)	at org.kuali.rice.kns.web.struts.action.KualiRequestProcessor.processFormActionAndForward(KualiRequestProcessor.java:216)	at org.kuali.rice.kns.web.struts.action.KualiRequestProcessor.strutsProcess(KualiRequestProcessor.java:203)	at org.kuali.rice.kns.web.struts.action.KualiRequestProcessor.process(KualiRequestProcessor.java:90)	at org.kuali.kpme.core.KPMERequestProcessor.process(KPMERequestProcessor.java:43)	at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1913)	at org.kuali.rice.kns.web.struts.action.KualiActionServlet.process(KualiActionServlet.java:198)	at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:449)	at javax.servlet.http.HttpServlet.service(HttpServlet.java:735)	at javax.servlet.http.HttpServlet.service(HttpServlet.java:848)	at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:669)	at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1448)	at org.kuali.rice.kew.web.UserPreferencesFilter.doFilter(UserPreferencesFilter.java:78)	at org.kuali.rice.kew.web.UserPreferencesFilter.doFilter(UserPreferencesFilter.java:62)	at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1419)	at org.kuali.rice.krad.web.filter.UserLoginFilter.doFilter(UserLoginFilter.java:89)	at org.kuali.rice.krad.web.filter.UserLoginFilter.doFilter(UserLoginFilter.java:77)	at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1419)	at org.kuali.rice.krad.web.filter.BootstrapFilterChain.doFilter(BootstrapFilter.java:327)	at org.kuali.rice.krad.web.filter.DummyLoginFilter.doFilter(DummyLoginFilter.java:83)	at org.kuali.rice.krad.web.filter.DummyLoginFilter.doFilter(DummyLoginFilter.java:63)	at org.kuali.rice.krad.web.filter.BootstrapFilterChain.doFilter(BootstrapFilter.java:320)	at org.kuali.rice.krad.web.filter.BootstrapFilter.doFilter(BootstrapFilter.java:199)	at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1419)	at org.kuali.rice.core.web.Log4JContextClearingFilter.doFilterInternal(Log4JContextClearingFilter.java:37)	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)	at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1419)	at org.displaytag.filter.ResponseOverrideFilter.doFilter(ResponseOverrideFilter.java:125)	at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1419)	at org.kuali.rice.krad.web.filter.HideWebInfFilter.doFilter(HideWebInfFilter.java:68)	at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1419)	at org.springframework.web.filter.AbstractRequestLoggingFilter.doFilterInternal(AbstractRequestLoggingFilter.java:193)	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)	at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1419)	at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:455)	at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:137)	at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:557)	at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:231)	at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1075)	at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:384)	at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:193)	at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1009)	at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:135)	at org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:255)	at org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:154)	at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:116)	at org.eclipse.jetty.server.Server.handle(Server.java:368)	at org.eclipse.jetty.server.AbstractHttpConnection.handleRequest(AbstractHttpConnection.java:488)	at org.eclipse.jetty.server.AbstractHttpConnection.headerComplete(AbstractHttpConnection.java:932)	at org.eclipse.jetty.server.AbstractHttpConnection$RequestHandler.headerComplete(AbstractHttpConnection.java:994)	at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:640)	at org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:235)	at org.eclipse.jetty.server.AsyncHttpConnection.handle(AsyncHttpConnection.java:82)	at org.eclipse.jetty.io.nio.SelectChannelEndPoint.handle(SelectChannelEndPoint.java:628)	at org.eclipse.jetty.io.nio.SelectChannelEndPoint$1.run(SelectChannelEndPoint.java:52)	at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:608)	at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:543)	at java.lang.Thread.run(Thread.java:724)