1919 2018-08-20 15:11:01,668 ERROR [org.keycloak.services.error.KeycloakErrorHandler] (default task-27) Uncaught server error: org.keycloak.broker.provider.IdentityBrokerException: Could no     t process response from SAML identity provider.
1920         at org.keycloak.broker.saml.SAMLEndpoint$Binding.handleLoginResponse(SAMLEndpoint.java:444)
1921         at org.keycloak.broker.saml.SAMLEndpoint$Binding.handleSamlResponse(SAMLEndpoint.java:479)
1922         at org.keycloak.broker.saml.SAMLEndpoint$Binding.execute(SAMLEndpoint.java:237)
1923         at org.keycloak.broker.saml.SAMLEndpoint.postBinding(SAMLEndpoint.java:157)
1924         at sun.reflect.GeneratedMethodAccessor916.invoke(Unknown Source)
1925         at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
1926         at java.lang.reflect.Method.invoke(Method.java:498)
1927         at org.jboss.resteasy.core.MethodInjectorImpl.invoke(MethodInjectorImpl.java:140)
1928         at org.jboss.resteasy.core.ResourceMethodInvoker.invokeOnTarget(ResourceMethodInvoker.java:295)
1929         at org.jboss.resteasy.core.ResourceMethodInvoker.invoke(ResourceMethodInvoker.java:249)
1930         at org.jboss.resteasy.core.ResourceLocatorInvoker.invokeOnTargetObject(ResourceLocatorInvoker.java:138)
1931         at org.jboss.resteasy.core.ResourceLocatorInvoker.invoke(ResourceLocatorInvoker.java:107)
1932         at org.jboss.resteasy.core.ResourceLocatorInvoker.invokeOnTargetObject(ResourceLocatorInvoker.java:133)
1933         at org.jboss.resteasy.core.ResourceLocatorInvoker.invoke(ResourceLocatorInvoker.java:101)
1934         at org.jboss.resteasy.core.SynchronousDispatcher.invoke(SynchronousDispatcher.java:406)
1935         at org.jboss.resteasy.core.SynchronousDispatcher.invoke(SynchronousDispatcher.java:213)
1936         at org.jboss.resteasy.plugins.server.servlet.ServletContainerDispatcher.service(ServletContainerDispatcher.java:228)
1937         at org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher.service(HttpServletDispatcher.java:56)
1938         at org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher.service(HttpServletDispatcher.java:51)
1939         at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)
1940         at io.undertow.servlet.handlers.ServletHandler.handleRequest(ServletHandler.java:85)
1941         at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:129)
1942         at org.keycloak.services.filters.KeycloakSessionServletFilter.doFilter(KeycloakSessionServletFilter.java:90)
1943         at io.undertow.servlet.core.ManagedFilter.doFilter(ManagedFilter.java:61)
1944         at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:131)
1945         at io.undertow.servlet.handlers.FilterHandler.handleRequest(FilterHandler.java:84)
1946         at io.undertow.servlet.handlers.security.ServletSecurityRoleHandler.handleRequest(ServletSecurityRoleHandler.java:62)
1947         at io.undertow.servlet.handlers.ServletDispatchingHandler.handleRequest(ServletDispatchingHandler.java:36)
1948         at org.wildfly.extension.undertow.security.SecurityContextAssociationHandler.handleRequest(SecurityContextAssociationHandler.java:78)
1949         at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
1950         at io.undertow.servlet.handlers.security.SSLInformationAssociationHandler.handleRequest(SSLInformationAssociationHandler.java:131)
1951         at io.undertow.servlet.handlers.security.ServletAuthenticationCallHandler.handleRequest(ServletAuthenticationCallHandler.java:57)
1952         at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
1953         at io.undertow.security.handlers.AbstractConfidentialityHandler.handleRequest(AbstractConfidentialityHandler.java:46)
1954         at io.undertow.servlet.handlers.security.ServletConfidentialityConstraintHandler.handleRequest(ServletConfidentialityConstraintHandler.java:64)
1955         at io.undertow.security.handlers.AuthenticationMechanismsHandler.handleRequest(AuthenticationMechanismsHandler.java:60)
1956         at io.undertow.servlet.handlers.security.CachedAuthenticatedSessionHandler.handleRequest(CachedAuthenticatedSessionHandler.java:77)
1957         at io.undertow.security.handlers.NotificationReceiverHandler.handleRequest(NotificationReceiverHandler.java:50)
1958         at io.undertow.security.handlers.AbstractSecurityContextAssociationHandler.handleRequest(AbstractSecurityContextAssociationHandler.java:43)
1959         at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
1960         at org.wildfly.extension.undertow.security.jacc.JACCContextIdHandler.handleRequest(JACCContextIdHandler.java:61)
1961         at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
1962         at org.wildfly.extension.undertow.deployment.GlobalRequestControllerHandler.handleRequest(GlobalRequestControllerHandler.java:68)
1963         at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
1964         at io.undertow.servlet.handlers.ServletInitialHandler.handleFirstRequest(ServletInitialHandler.java:292)
1965         at io.undertow.servlet.handlers.ServletInitialHandler.access$100(ServletInitialHandler.java:81)
1966         at io.undertow.servlet.handlers.ServletInitialHandler$2.call(ServletInitialHandler.java:138)
1967         at io.undertow.servlet.handlers.ServletInitialHandler$2.call(ServletInitialHandler.java:135)
1968         at io.undertow.servlet.core.ServletRequestContextThreadSetupAction$1.call(ServletRequestContextThreadSetupAction.java:48)
1969         at io.undertow.servlet.core.ContextClassLoaderSetupAction$1.call(ContextClassLoaderSetupAction.java:43)
1970         at org.wildfly.extension.undertow.security.SecurityContextThreadSetupAction.lambda$create$0(SecurityContextThreadSetupAction.java:105)
1971         at org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction.lambda$create$0(UndertowDeploymentInfoService.java:1508)
1972         at org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction.lambda$create$0(UndertowDeploymentInfoService.java:1508)
1973         at org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction.lambda$create$0(UndertowDeploymentInfoService.java:1508)
1974         at org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction.lambda$create$0(UndertowDeploymentInfoService.java:1508)
1975         at io.undertow.servlet.handlers.ServletInitialHandler.dispatchRequest(ServletInitialHandler.java:272)
1976         at io.undertow.servlet.handlers.ServletInitialHandler.access$000(ServletInitialHandler.java:81)
1977         at io.undertow.servlet.handlers.ServletInitialHandler$1.handleRequest(ServletInitialHandler.java:104)
1978         at io.undertow.server.Connectors.executeRootHandler(Connectors.java:326)
1979         at io.undertow.server.HttpServerExchange$1.run(HttpServerExchange.java:812)
1980         at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
1981         at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
1982         at java.lang.Thread.run(Thread.java:748)
1983 Caused by: java.lang.NullPointerException