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java.sql.SQLException: Already closed.	at org.apache.commons.dbcp.PoolableConnection.close(PoolableConnection.java:84)	at org.apache.commons.dbcp.PoolingDataSource$PoolGuardConnectionWrapper.close(PoolingDataSource.java:181)	at org.sakaiproject.db.impl.BasicSqlService.returnConnection(BasicSqlService.java:276)	at org.sakaiproject.db.impl.BasicSqlService.dbRead(BasicSqlService.java:620)	at org.sakaiproject.util.BaseDbFlatStorage.getResource(BaseDbFlatStorage.java:340)	at org.sakaiproject.util.BaseDbFlatStorage.getResource(BaseDbFlatStorage.java:320)	at org.sakaiproject.site.impl.DbSiteService$DbStorage.get(DbSiteService.java:237)	at org.sakaiproject.site.impl.BaseSiteService.getDefinedSite(BaseSiteService.java:586)	at org.sakaiproject.site.impl.BaseSiteService.getSite(BaseSiteService.java:672)	at org.sakaiproject.site.impl.BaseSiteService.getSiteVisit(BaseSiteService.java:750)	at org.sakaiproject.site.cover.SiteService.getSiteVisit(SiteService.java:134)	at org.sakaiproject.portal.charon.site.PortalSiteHelperImpl.getSiteVisit(PortalSiteHelperImpl.java:896)	at org.sakaiproject.portal.charon.site.PortalSiteHelperImpl.getMyWorkspace(PortalSiteHelperImpl.java:698)	at org.sakaiproject.portal.charon.site.AbstractSiteViewImpl.(AbstractSiteViewImpl.java:99)	at org.sakaiproject.portal.charon.site.SubSiteViewImpl.(SubSiteViewImpl.java:58)	at org.sakaiproject.portal.charon.site.PortalSiteHelperImpl.getSitesView(PortalSiteHelperImpl.java:1135)	at org.sakaiproject.portal.charon.SkinnableCharonPortal.includeSubSites(SkinnableCharonPortal.java:415)	at org.sakaiproject.portal.charon.handlers.SiteHandler.doSite(SiteHandler.java:263)	at org.sakaiproject.portal.charon.handlers.SiteHandler.doGet(SiteHandler.java:125)	at org.sakaiproject.portal.charon.SkinnableCharonPortal.doGet(SkinnableCharonPortal.java:837)	at javax.servlet.http.HttpServlet.service(HttpServlet.java:627)	at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:269)	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)	at org.sakaiproject.util.RequestFilter.doFilter(RequestFilter.java:658)	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:215)	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:172)	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:117)	at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:581)	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:108)	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:174)	at org.apache.jk.server.JkCoyoteHandler.invoke(JkCoyoteHandler.java:200)	at org.apache.jk.common.HandlerRequest.invoke(HandlerRequest.java:291)	at org.apache.jk.common.ChannelSocket.invoke(ChannelSocket.java:775)	at org.apache.jk.common.ChannelSocket.processConnection(ChannelSocket.java:704)	at org.apache.jk.common.ChannelSocket$SocketConnection.runIt(ChannelSocket.java:897)	at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:689)	at java.lang.Thread.run(Thread.java:662)