IBM Connections Forum : Unable to view Communities

When I try to go in to Communities I have subscribed to I get this error message:

com.ibm.lconn.forum.exception.NotFoundException
com.ibm.forum.web.actions.DiscussionThreadAction.doAction(DiscussionThreadAction.java:85)
com.ibm.forum.web.actions.ForumAction.execute(ForumAction.java:47)
org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:421)
org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:226)
org.apache.struts.action.ActionServlet.process(ActionServlet.java:1164)
org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:397)
javax.servlet.http.HttpServlet.service(HttpServlet.java:743)
javax.servlet.http.HttpServlet.service(HttpServlet.java:856)
com.ibm.ws.webcontainer.servlet.ServletWrapper.service(ServletWrapper.java:1143)
com.ibm.ws.webcontainer.servlet.ServletWrapper.service(ServletWrapper.java:1084)
com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:145)
com.ibm.tango.web.ui.servlet.LastLoginFilter.doFilter(LastLoginFilter.java:99)
com.ibm.ws.webcontainer.filter.FilterInstanceWrapper.doFilter(FilterInstanceWrapper.java:190)
com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:130)
com.ibm.tango.web.ui.servlet.ApplicationContextFilter.doFilter(ApplicationContextFilter.java:162)
com.ibm.ws.webcontainer.filter.FilterInstanceWrapper.doFilter(FilterInstanceWrapper.java:190)
com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:130)
com.ibm.tango.web.ui.servlet.UuidMapperFilter.doFilter(UuidMapperFilter.java:114)
com.ibm.ws.webcontainer.filter.FilterInstanceWrapper.doFilter(FilterInstanceWrapper.java:190)
com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:130)
com.ibm.lconn.core.web.auth.LCUserDataConstraintFilter.doFilter(LCUserDataConstraintFilter.java:84)
com.ibm.ws.webcontainer.filter.FilterInstanceWrapper.doFilter(FilterInstanceWrapper.java:190)
com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:130)
com.ibm.lconn.core.web.request.HttpRequestFilter.doFilter(HttpRequestFilter.java:77)
com.ibm.ws.webcontainer.filter.FilterInstanceWrapper.doFilter(FilterInstanceWrapper.java:190)
com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:130)
com.ibm.forum.web.core.servlet.AuthenticationFilter.doFilter(AuthenticationFilter.java:115)
com.ibm.ws.webcontainer.filter.FilterInstanceWrapper.doFilter(FilterInstanceWrapper.java:190)
com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:130)
com.ibm.tango.web.ui.servlet.Utf8CharEncodingFilter.doFilter(Utf8CharEncodingFilter.java:63)
com.ibm.ws.webcontainer.filter.FilterInstanceWrapper.doFilter(FilterInstanceWrapper.java:190)
com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:130)
com.ibm.lconn.core.web.util.lang.I18NFilter.doFilter(I18NFilter.java:203)
com.ibm.ws.webcontainer.filter.FilterInstanceWrapper.doFilter(FilterInstanceWrapper.java:190)
com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:130)
com.ibm.ws.webcontainer.filter.WebAppFilterChain._doFilter(WebAppFilterChain.java:87)
com.ibm.ws.webcontainer.filter.WebAppFilterManager.doFilter(WebAppFilterManager.java:839)
com.ibm.ws.webcontainer.filter.WebAppFilterManager.doFilter(WebAppFilterManager.java:681)
com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:587)
com.ibm.ws.wswebcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:481)
com.ibm.ws.webcontainer.servlet.CacheServletWrapper.handleRequest(CacheServletWrapper.java:90)
com.ibm.ws.webcontainer.WebContainer.handleRequest(WebContainer.java:748)
com.ibm.ws.wswebcontainer.WebContainer.handleRequest(WebContainer.java:1466)
com.ibm.ws.webcontainer.channel.WCChannelLink.ready(WCChannelLink.java:119)
com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleDiscrimination(HttpInboundLink.java:458)
com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleNewInformation(HttpInboundLink.java:387)
com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.ready(HttpInboundLink.java:267)
com.ibm.ws.tcp.channel.impl.NewConnectionInitialReadCallback.sendToDiscriminators(NewConnectionInitialReadCallback.java:214)
com.ibm.ws.tcp.channel.impl.NewConnectionInitialReadCallback.complete(NewConnectionInitialReadCallback.java:113)
com.ibm.ws.tcp.channel.impl.AioReadCompletionListener.futureCompleted(AioReadCompletionListener.java:165)
com.ibm.io.async.AbstractAsyncFuture.invokeCallback(AbstractAsyncFuture.java:217)
com.ibm.io.async.AsyncChannelFuture.fireCompletionActions(AsyncChannelFuture.java:161)
com.ibm.io.async.AsyncFuture.completed(AsyncFuture.java:136)
com.ibm.io.async.ResultHandler.complete(ResultHandler.java:196)
com.ibm.io.async.ResultHandler.runEventProcessingLoop(ResultHandler.java:751)
com.ibm.io.async.ResultHandler$2.run(ResultHandler.java:881)
com.ibm.ws.util.ThreadPool$Worker.run(ThreadPool.java:1473)

It is also showing that there have been no updates to the community for the last few days - I know this is not the real case

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