I am also getting the blank page, below is the knowage.log footprint
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[http-bio-7080-exec-8] 08 Jan 2018 22:23:17,001 ERROR it.eng.spagobi.commons.utilities.ChannelUtilities.getSpagoBIContextName:122 - SPAGOBI.SPAGOBI-MODE.mode IS NULL
[http-bio-7080-exec-8] 08 Jan 2018 22:23:17,013 ERROR it.eng.spagobi.commons.utilities.ChannelUtilities.isWebRunning:146 - SPAGOBI.SPAGOBI-MODE.mode IS NULL
[http-bio-7080-exec-8] 08 Jan 2018 22:23:17,013 ERROR it.eng.spagobi.commons.utilities.SpagoBIUtilities.readJndiResource:319 - java.lang.NullPointerException
[http-bio-7080-exec-8] 08 Jan 2018 22:23:17,014 ERROR it.eng.spagobi.services.common.SsoServiceFactory.createProxyService:55 - Error occurred
java.lang.NullPointerException
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Unknown Source)
at it.eng.spagobi.services.common.SsoServiceFactory.createProxyService(SsoServiceFactory.java:52)
at it.eng.spagobi.commons.filters.ProfileFilter.getUserIdWithSSO(ProfileFilter.java:280)
at it.eng.spagobi.commons.filters.ProfileFilter.doFilter(ProfileFilter.java:121)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at it.eng.spagobi.commons.filters.SpagoBICoreCheckSessionFilter.doFilter(SpagoBICoreCheckSessionFilter.java:94)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at it.eng.spagobi.utilities.filters.EncodingFilter.doFilter(EncodingFilter.java:54)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:100)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:953)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:409)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1044)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:607)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:315)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
[http-bio-7080-exec-8] 08 Jan 2018 22:23:17,014 ERROR it.eng.spagobi.commons.filters.ProfileFilter.doFilter:151 - Error while service execution
java.lang.NullPointerException
at it.eng.spagobi.commons.filters.ProfileFilter.getUserIdWithSSO(ProfileFilter.java:281)
at it.eng.spagobi.commons.filters.ProfileFilter.doFilter(ProfileFilter.java:121)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at it.eng.spagobi.commons.filters.SpagoBICoreCheckSessionFilter.doFilter(SpagoBICoreCheckSessionFilter.java:94)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at it.eng.spagobi.utilities.filters.EncodingFilter.doFilter(EncodingFilter.java:54)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:100)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:953)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:409)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1044)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:607)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:315)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
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