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java.lang.NullPointerException at oracle.security.fed.util.common.Base64.fromBase64(Unknown Source) at oracle.security.fed.sec.key.retrieval.CertificateRetrievalEventHandler.perform(Unknown Source) at oracle.security.fed.controller.ActionStateMachine.processEvent(Unknown Source) at oracle.security.fed.controller.EventControllerImpl.processEvent(Unknown Source) at oracle.security.fed.sec.key.select.EventBasedKeySource.getVerificationCert(Unknown Source) at oracle.security.fed.sec.SecurityServicesImpl.processIncoming(Unknown Source) at oracle.security.fed.sec.SecurityServicesImpl.processIncoming(Unknown Source) at oracle.security.fed.http.translator.saml.SAMLProtocolMessageTranslator.translateMessage(Unknown Source) at oracle.security.fed.http.handlers.profiles.idp.SAMLV20RequestHandler.parseProtocolMessage(Unknown Source) at oracle.security.fed.controller.web.action.EventFactoryRequestHandlerSupport.generateEvent(Unknown Source) at oracle.security.fed.http.handlers.profiles.idp.SAMLV20RequestHandler.perform(Unknown Source) at oracle.security.fed.controller.ApplicationController.processServletRequest(Unknown Source) at oracle.security.fed.controller.web.servlet.FederationServlet.doGet(Unknown Source) at javax.servlet.http.HttpServlet.service(HttpServlet.java:707) at javax.servlet.http.HttpServlet.service(HttpServlet.java:820) at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:227) at weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:125) at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:300) at weblogic.servlet.internal.TailFilter.doFilter(TailFilter.java:26) at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56) at oracle.security.wls.filter.SSOSessionSynchronizationFilter.doFilter(SSOSessionSynchronizationFilter.java:279) at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56) at oracle.security.am.agent.wls.filters.OAMServletAuthenticationFilter.doFilter(OAMServletAuthenticationFilter.java:260) at oracle.security.am.agent.wls.filters.OAMValidationSystemFilter.doFilter(OAMValidationSystemFilter.java:133) at oracle.security.wls.oamagent.OAMAgentWrapperFilter.doFilter(OAMAgentWrapperFilter.java:121) at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56) at oracle.dms.wls.DMSServletFilter.doFilter(DMSServletFilter.java:330) at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56) at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.doIt(WebAppServletContext.java:3684) at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:3650) at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321) at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:121) at weblogic.servlet.internal.WebAppServletContext.securedExecute(WebAppServletContext.java:2268) at weblogic.servlet.internal.WebAppServletContext.execute(WebAppServletContext.java:2174) at weblogic.servlet.internal.ServletRequestImpl.run(ServletRequestImpl.java:1446) at weblogic.work.ExecuteThread.execute(ExecuteThread.java:201) at weblogic.work.ExecuteThread.run(ExecuteThread.java:173)