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net.fortuna.ical4j.data.ParserException: Error at line 22: null	at net.fortuna.ical4j.data.CalendarParserImpl.parse(CalendarParserImpl.java:135)	at net.fortuna.ical4j.data.CalendarBuilder.build(CalendarBuilder.java:176)	at net.fortuna.ical4j.data.CalendarBuilder.build(CalendarBuilder.java:157)	at net.fortuna.ical4j.data.CalendarBuilder.build(CalendarBuilder.java:145)	at org.jasig.portlet.calendar.processor.ICalendarContentProcessorImpl.getEvents(ICalendarContentProcessorImpl.java:72)	at org.jasig.portlet.calendar.adapter.ConfigurableHttpCalendarAdapter.getEvents(ConfigurableHttpCalendarAdapter.java:161)	at org.jasig.portlet.calendar.mvc.controller.AjaxCalendarController.getEventList(AjaxCalendarController.java:169)	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)	at java.lang.reflect.Method.invoke(Method.java:597)	at org.springframework.web.bind.annotation.support.HandlerMethodInvoker.doInvokeMethod(HandlerMethodInvoker.java:421)	at org.springframework.web.bind.annotation.support.HandlerMethodInvoker.invokeHandlerMethod(HandlerMethodInvoker.java:136)	at org.springframework.web.portlet.mvc.annotation.AnnotationMethodHandlerAdapter.invokeHandlerMethod(AnnotationMethodHandlerAdapter.java:271)	at org.springframework.web.portlet.mvc.annotation.AnnotationMethodHandlerAdapter.doHandle(AnnotationMethodHandlerAdapter.java:259)	at org.springframework.web.portlet.mvc.annotation.AnnotationMethodHandlerAdapter.handleAction(AnnotationMethodHandlerAdapter.java:210)	at org.springframework.web.portlet.DispatcherPortlet.doActionService(DispatcherPortlet.java:694)	at org.springframework.web.portlet.FrameworkPortlet.processRequest(FrameworkPortlet.java:480)	at org.springframework.web.portlet.FrameworkPortlet.processAction(FrameworkPortlet.java:462)	at org.apache.pluto.core.PortletServlet.dispatch(PortletServlet.java:218)	at org.apache.pluto.core.PortletServlet.doPost(PortletServlet.java:145)	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.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:646)	at org.apache.catalina.core.ApplicationDispatcher.doInclude(ApplicationDispatcher.java:551)	at org.apache.catalina.core.ApplicationDispatcher.include(ApplicationDispatcher.java:488)	at org.apache.pluto.core.DefaultPortletInvokerService.invoke(DefaultPortletInvokerService.java:167)	at org.apache.pluto.core.DefaultPortletInvokerService.action(DefaultPortletInvokerService.java:85)	at org.apache.pluto.core.PortletContainerImpl.doAction(PortletContainerImpl.java:217)	at org.jasig.portal.portlet.rendering.PortletRendererImpl.doAction(PortletRendererImpl.java:184)	at org.jasig.portal.channels.portlet.SpringPortletChannelImpl.action(SpringPortletChannelImpl.java:260)	at org.jasig.portal.channels.portlet.CSpringPortletAdaptor.processAction(CSpringPortletAdaptor.java:155)	at org.jasig.portal.ChannelRenderer$Worker.execute(ChannelRenderer.java:524)	at org.jasig.portal.utils.threading.BaseTask.run(BaseTask.java:41)	at sun.reflect.GeneratedMethodAccessor207.invoke(Unknown Source)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)	at java.lang.reflect.Method.invoke(Method.java:597)	at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:307)	at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:182)	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:149)	at org.springframework.orm.jpa.JpaInterceptor.invoke(JpaInterceptor.java:96)	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)	at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)	at org.jasig.portal.$Proxy145.run(Unknown Source)	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441)	at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)	at java.util.concurrent.FutureTask.run(FutureTask.java:138)	at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)	at java.lang.Thread.run(Thread.java:619)