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Error Info:
Class Name: com.ilrn.controller.authentication.actions.SystemCheckRouterAction
Mapping Path: /postLoginRedirect
Stack Trace:java.lang.NullPointerException
	at com.ilrn.session.Session.getSsoGuid(Session.java:2768)
	at com.ilrn.session.services.SsoManagerImpl.refreshToken(SsoManagerImpl.java:202)
	at com.ilrn.session.services.SsoUserServiceImpl.refreshTokenAsNeeded(SsoUserServiceImpl.java:429)
	at com.ilrn.session.services.SsoUserServiceImpl.getAndRefreshSsoTokenOnSession(SsoUserServiceImpl.java:418)
	at com.ilrn.services.products.MindTapReaderManagerImpl.getSsoTokenStorage(MindTapReaderManagerImpl.java:117)
	at com.ilrn.services.products.MindTapReaderManagerImpl.putExternalReaderServiceOnSession(MindTapReaderManagerImpl.java:48)
	at com.ilrn.controller.authentication.actions.SystemCheckRouterAction.execute(SystemCheckRouterAction.java:59)
	at com.ilrn.controller.action.ILrnAction.execute(ILrnAction.java:145)
	at com.ilrn.controller.tiles.ILrnTilesRequestProcessor.processActionPerform(ILrnTilesRequestProcessor.java:298)
	at com.ilrn.controller.tiles.ILrnTilesRequestProcessor.process(ILrnTilesRequestProcessor.java:192)
	at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1194)
	at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:414)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:620)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
	at com.ilrn.controller.filters.ContentsFilter.doFilter(ContentsFilter.java:42)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
	at org.springframework.orm.hibernate3.support.OpenSessionInViewFilter.doFilterInternal(OpenSessionInViewFilter.java:198)
	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
	at com.ilrn.session.webservices.axisws.clientactivity.ForceResponseCode200Filter.doFilter(ForceResponseCode200Filter.java:24)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
	at com.ilrn.controller.filters.ReferenceFilter.doFilter(ReferenceFilter.java:70)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
	at com.ilrn.controller.filters.WebContextFilter.doFilter(WebContextFilter.java:60)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
	at com.ilrn.util.DynamicRequestsFilter.doFilter(DynamicRequestsFilter.java:118)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122)
	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:501)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:170)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)
	at org.apache.coyote.ajp.AjpProcessor.process(AjpProcessor.java:193)
	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:607)
	at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:313)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
	at java.lang.Thread.run(Thread.java:745)
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