Issue

• The SAML Logout response (<samlp:LogoutResponse ...>) cannot be handled - the following NPE is thrown:

  ERROR [org.keycloak.services.error.KeycloakErrorHandler] (default task-12) Uncaught server error: java.lang.NullPointerException
  at org.keycloak.events.EventBuilder.client(EventBuilder.java:93)
  at org.keycloak.protocol.saml.SamlProtocol.finishLogout(SamlProtocol.java:612)
  at org.keycloak.services.managers.AuthenticationManager.finishBrowserLogout(AuthenticationManager.java:523)
  at org.keycloak.broker.saml.SAMLEndpoint$Binding.handleLogoutResponse(SAMLEndpoint.java:509)
  at org.keycloak.broker.saml.SAMLEndpoint$Binding.handleSamlResponse(SAMLEndpoint.java:483)
  at org.keycloak.broker.saml.SAMLEndpoint$Binding.execute(SAMLEndpoint.java:237)
  at org.keycloak.broker.saml.SAMLEndpoint.postBinding(SAMLEndpoint.java:157)
  at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
  at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
  at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
  at java.lang.reflect.Method.invoke(Method.java:498)
  at org.jboss.resteasy.core.MethodInjectorImpl.invoke(MethodInjectorImpl.java:140)
  ...