The federation partnership is failing with java null pointer exception

Hello

Policy Server,Platform=Windows version 6.2  (Build 9200),Version=12.52,Update=02.01,
Proxy Sever = Linux 2.6.32-754.2.1.el6.x86_64
CA SiteMinder Option Pack for Web Agent – 12.52.0.142
Webagent Version – 12.52.0.142  Build Number=142 Update=0
Server version: Apache/2.2.15 (Unix)
FWS installed on tomcat – apache-tomcat-7.0.28

We are getting the below error in the trace logs for an IDP Initiated federation. What could this mean?

[10/15/2018][18:51:30][10129][1983399680][2339a05f-ecb1e728-acd264c2-1ec2537f-127ee251-3a4][AssertionConsumer.java][doPost][Exception caught in class com.netegrity.affiliatemind
er.webservices.saml2.AssertionConsumer, method doPost, message java.lang.NullPointerException.]
[10/15/2018][18:51:30][10129][1983399680][2339a05f-ecb1e728-acd264c2-1ec2537f-127ee251-3a4][AssertionConsumer.java][doPost][Stack Trace: java.lang.NullPointerException
        at com.netegrity.affiliateminder.webservices.saml2.dk.a(DashoA10*..:231)
        at com.netegrity.affiliateminder.webservices.saml2.dk.b(DashoA10*..:181)
        at com.netegrity.affiliateminder.webservices.saml2.AssertionConsumer.a(DashoA10*..:1484)
        at com.netegrity.affiliateminder.webservices.saml2.AssertionConsumer.doPost(DashoA10*..:656)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:641)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
        at com.netegrity.affiliateminder.webservices.CAFedFilter.doFilter(DashoA10*..:58)
        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:225)
        at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)
        at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
        at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:168)
        at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98)
        at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:927)
        at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
        at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)
        at org.apache.coyote.ajp.AjpProcessor.process(AjpProcessor.java:200)
        at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:579)
        at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:310)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
        at java.lang.Thread.run(Thread.java:745)
]
[10/15/2018][18:51:30][10129][1983399680][2339a05f-ecb1e728-acd264c2-1ec2537f-127ee251-3a4][AssertionConsumer.java][doPost][Ending SAML2 AssertionConsumer Service request proces
sing with HTTP error 500]