# NullPointerException Facebook token exchange **URL:** \ **Category:** Configuring the server\ **Tags:** authentication\ **Created:** [January 26, 2021, 2:48pm UTC](https://forum.keycloak.org/t/nullpointerexception-facebook-token-exchange/7002 "2021-01-26T14:48:16Z")\ **Posts on this page:** 1\ **Page:** 1
**Author:** ![zack](https://avatars.discourse-cdn.com/v4/letter/z/f6c823/32.png) [@zack](https://forum.keycloak.org/u/zack)\ **Post date:** [January 26, 2021, 2:48pm UTC](https://forum.keycloak.org/t/nullpointerexception-facebook-token-exchange/7002/1 "2021-01-26T14:48:16Z")
I’m facing an issue using token exchange with facebook provider (working correctly with google provider). please find below the server logged exception stack trace: keycloak\_1 | 14:27:14,674 ERROR [org.keycloak.services.error.KeycloakErrorHandler] (default task-310) Uncaught server error: java.lang.NullPointerException keycloak\_1 | at org.keycloak.keycloak-services@10.0.2//org.keycloak.broker.oidc.OIDCIdentityProvider.isIssuer(OIDCIdentityProvider.java:593) keycloak\_1 | at org.keycloak.keycloak-services@10.0.2//org.keycloak.protocol.oidc.endpoints.TokenEndpoint.exchangeExternalToken(TokenEndpoint.java:948) keycloak\_1 | at org.keycloak.keycloak-services@10.0.2//org.keycloak.protocol.oidc.endpoints.TokenEndpoint.tokenExchange(TokenEndpoint.java:745) keycloak\_1 | at org.keycloak.keycloak-services@10.0.2//org.keycloak.protocol.oidc.endpoints.TokenEndpoint.processGrantRequest(TokenEndpoint.java:195) keycloak\_1 | at jdk.internal.reflect.GeneratedMethodAccessor500.invoke(Unknown Source) keycloak\_1 | at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) keycloak\_1 | at java.base/java.lang.reflect.Method.invoke(Method.java:566) keycloak\_1 | at org.jboss.resteasy.resteasy-jaxrs@3.11.2.Final//org.jboss.resteasy.core.MethodInjectorImpl.invoke(MethodInjectorImpl.java:138) keycloak\_1 | at org.jboss.resteasy.resteasy-jaxrs@3.11.2.Final//org.jboss.resteasy.core.ResourceMethodInvoker.internalInvokeOnTarget(ResourceMethodInvoker.java:535) keycloak\_1 | at org.jboss.resteasy.resteasy-jaxrs@3.11.2.Final//org.jboss.resteasy.core.ResourceMethodInvoker.invokeOnTargetAfterFilter(ResourceMethodInvoker.java:424) keycloak\_1 | at org.jboss.resteasy.resteasy-jaxrs@3.11.2.Final//org.jboss.resteasy.core.ResourceMethodInvoker.lambda$invokeOnTarget$0(ResourceMethodInvoker.java:385) keycloak\_1 | at org.jboss.resteasy.resteasy-jaxrs@3.11.2.Final//org.jboss.resteasy.core.interception.PreMatchContainerRequestContext.filter(PreMatchContainerRequestContext.java:356) keycloak\_1 | at org.jboss.resteasy.resteasy-jaxrs@3.11.2.Final//org.jboss.resteasy.core.ResourceMethodInvoker.invokeOnTarget(ResourceMethodInvoker.java:387) keycloak\_1 | at org.jboss.resteasy.resteasy-jaxrs@3.11.2.Final//org.jboss.resteasy.core.ResourceMethodInvoker.invoke(ResourceMethodInvoker.java:356) keycloak\_1 | at org.jboss.resteasy.resteasy-jaxrs@3.11.2.Final//org.jboss.resteasy.core.ResourceLocatorInvoker.invokeOnTargetObject(ResourceLocatorInvoker.java:150) keycloak\_1 | at org.jboss.resteasy.resteasy-jaxrs@3.11.2.Final//org.jboss.resteasy.core.ResourceLocatorInvoker.invoke(ResourceLocatorInvoker.java:110) keycloak\_1 | at org.jboss.resteasy.resteasy-jaxrs@3.11.2.Final//org.jboss.resteasy.core.ResourceLocatorInvoker.invokeOnTargetObject(ResourceLocatorInvoker.java:141) keycloak\_1 | at org.jboss.resteasy.resteasy-jaxrs@3.11.2.Final//org.jboss.resteasy.core.ResourceLocatorInvoker.invoke(ResourceLocatorInvoker.java:104) keycloak\_1 | at org.jboss.resteasy.resteasy-jaxrs@3.11.2.Final//org.jboss.resteasy.core.SynchronousDispatcher.invoke(SynchronousDispatcher.java:440) keycloak\_1 | at org.jboss.resteasy.resteasy-jaxrs@3.11.2.Final//org.jboss.resteasy.core.SynchronousDispatcher.lambda$invoke$4(SynchronousDispatcher.java:229) keycloak\_1 | at org.jboss.resteasy.resteasy-jaxrs@3.11.2.Final//org.jboss.resteasy.core.SynchronousDispatcher.lambda$preprocess$0(SynchronousDispatcher.java:135) keycloak\_1 | at org.jboss.resteasy.resteasy-jaxrs@3.11.2.Final//org.jboss.resteasy.core.interception.PreMatchContainerRequestContext.filter(PreMatchContainerRequestContext.java:356) keycloak\_1 | at org.jboss.resteasy.resteasy-jaxrs@3.11.2.Final//org.jboss.resteasy.core.SynchronousDispatcher.preprocess(SynchronousDispatcher.java:138) keycloak\_1 | at org.jboss.resteasy.resteasy-jaxrs@3.11.2.Final//org.jboss.resteasy.core.SynchronousDispatcher.invoke(SynchronousDispatcher.java:215) keycloak\_1 | at org.jboss.resteasy.resteasy-jaxrs@3.11.2.Final//org.jboss.resteasy.plugins.server.servlet.ServletContainerDispatcher.service(ServletContainerDispatcher.java:227) keycloak\_1 | at org.jboss.resteasy.resteasy-jaxrs@3.11.2.Final//org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher.service(HttpServletDispatcher.java:56) keycloak\_1 | at org.jboss.resteasy.resteasy-jaxrs@3.11.2.Final//org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher.service(HttpServletDispatcher.java:51) keycloak\_1 | at javax.servlet.api@2.0.0.Final//javax.servlet.http.HttpServlet.service(HttpServlet.java:590) keycloak\_1 | at io.undertow.servlet@2.1.0.Final//io.undertow.servlet.handlers.ServletHandler.handleRequest(ServletHandler.java:74) keycloak\_1 | at io.undertow.servlet@2.1.0.Final//io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:129) keycloak\_1 | at org.keycloak.keycloak-services@10.0.2//org.keycloak.services.filters.KeycloakSessionServletFilter.doFilter(KeycloakSessionServletFilter.java:91) keycloak\_1 | at io.undertow.servlet@2.1.0.Final//io.undertow.servlet.core.ManagedFilter.doFilter(ManagedFilter.java:61) keycloak\_1 | at io.undertow.servlet@2.1.0.Final//io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:131) keycloak\_1 | at io.undertow.servlet@2.1.0.Final//io.undertow.servlet.handlers.FilterHandler.handleRequest(FilterHandler.java:84) keycloak\_1 | at io.undertow.servlet@2.1.0.Final//io.undertow.servlet.handlers.security.ServletSecurityRoleHandler.handleRequest(ServletSecurityRoleHandler.java:62) keycloak\_1 | at io.undertow.servlet@2.1.0.Final//io.undertow.servlet.handlers.ServletChain$1.handleRequest(ServletChain.java:68) keycloak\_1 | at io.undertow.servlet@2.1.0.Final//io.undertow.servlet.handlers.ServletDispatchingHandler.handleRequest(ServletDispatchingHandler.java:36) keycloak\_1 | at org.wildfly.extension.undertow@19.1.0.Final//org.wildfly.extension.undertow.security.SecurityContextAssociationHandler.handleRequest(SecurityContextAssociationHandler.java:78) keycloak\_1 | at io.undertow.core@2.1.0.Final//io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43) keycloak\_1 | at io.undertow.servlet@2.1.0.Final//io.undertow.servlet.handlers.RedirectDirHandler.handleRequest(RedirectDirHandler.java:68) keycloak\_1 | at io.undertow.servlet@2.1.0.Final//io.undertow.servlet.handlers.security.SSLInformationAssociationHandler.handleRequest(SSLInformationAssociationHandler.java:132) keycloak\_1 | at io.undertow.servlet@2.1.0.Final//io.undertow.servlet.handlers.security.ServletAuthenticationCallHandler.handleRequest(ServletAuthenticationCallHandler.java:57) keycloak\_1 | at io.undertow.core@2.1.0.Final//io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43) keycloak\_1 | at io.undertow.core@2.1.0.Final//io.undertow.security.handlers.AbstractConfidentialityHandler.handleRequest(AbstractConfidentialityHandler.java:46) keycloak\_1 | at io.undertow.servlet@2.1.0.Final//io.undertow.servlet.handlers.security.ServletConfidentialityConstraintHandler.handleRequest(ServletConfidentialityConstraintHandler.java:64) keycloak\_1 | at io.undertow.core@2.1.0.Final//io.undertow.security.handlers.AuthenticationMechanismsHandler.handleRequest(AuthenticationMechanismsHandler.java:60) keycloak\_1 | at io.undertow.servlet@2.1.0.Final//io.undertow.servlet.handlers.security.CachedAuthenticatedSessionHandler.handleRequest(CachedAuthenticatedSessionHandler.java:77) keycloak\_1 | at io.undertow.core@2.1.0.Final//io.undertow.security.handlers.NotificationReceiverHandler.handleRequest(NotificationReceiverHandler.java:50) keycloak\_1 | at io.undertow.core@2.1.0.Final//io.undertow.security.handlers.AbstractSecurityContextAssociationHandler.handleRequest(AbstractSecurityContextAssociationHandler.java:43) keycloak\_1 | at io.undertow.core@2.1.0.Final//io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43) keycloak\_1 | at org.wildfly.extension.undertow@19.1.0.Final//org.wildfly.extension.undertow.security.jacc.JACCContextIdHandler.handleRequest(JACCContextIdHandler.java:61) keycloak\_1 | at io.undertow.core@2.1.0.Final//io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43) keycloak\_1 | at org.wildfly.extension.undertow@19.1.0.Final//org.wildfly.extension.undertow.deployment.GlobalRequestControllerHandler.handleRequest(GlobalRequestControllerHandler.java:68) keycloak\_1 | at io.undertow.core@2.1.0.Final//io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43) keycloak\_1 | at io.undertow.servlet@2.1.0.Final//io.undertow.servlet.handlers.ServletInitialHandler.handleFirstRequest(ServletInitialHandler.java:269) keycloak\_1 | at io.undertow.servlet@2.1.0.Final//io.undertow.servlet.handlers.ServletInitialHandler.access$100(ServletInitialHandler.java:78) keycloak\_1 | at io.undertow.servlet@2.1.0.Final//io.undertow.servlet.handlers.ServletInitialHandler$2.call(ServletInitialHandler.java:133) keycloak\_1 | at io.undertow.servlet@2.1.0.Final//io.undertow.servlet.handlers.ServletInitialHandler$2.call(ServletInitialHandler.java:130) keycloak\_1 | at io.undertow.servlet@2.1.0.Final//io.undertow.servlet.core.ServletRequestContextThreadSetupAction$1.call(ServletRequestContextThreadSetupAction.java:48) keycloak\_1 | at io.undertow.servlet@2.1.0.Final//io.undertow.servlet.core.ContextClassLoaderSetupAction$1.call(ContextClassLoaderSetupAction.java:43) keycloak\_1 | at org.wildfly.extension.undertow@19.1.0.Final//org.wildfly.extension.undertow.security.SecurityContextThreadSetupAction.lambda$create$0(SecurityContextThreadSetupAction.java:105) keycloak\_1 | at org.wildfly.extension.undertow@19.1.0.Final//org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction.lambda$create$0(UndertowDeploymentInfoService.java:1541) keycloak\_1 | at org.wildfly.extension.undertow@19.1.0.Final//org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction.lambda$create$0(UndertowDeploymentInfoService.java:1541) keycloak\_1 | at org.wildfly.extension.undertow@19.1.0.Final//org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction.lambda$create$0(UndertowDeploymentInfoService.java:1541) keycloak\_1 | at org.wildfly.extension.undertow@19.1.0.Final//org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction.lambda$create$0(UndertowDeploymentInfoService.java:1541) keycloak\_1 | at io.undertow.servlet@2.1.0.Final//io.undertow.servlet.handlers.ServletInitialHandler.dispatchRequest(ServletInitialHandler.java:249) keycloak\_1 | at io.undertow.servlet@2.1.0.Final//io.undertow.servlet.handlers.ServletInitialHandler.access$000(ServletInitialHandler.java:78) keycloak\_1 | at io.undertow.servlet@2.1.0.Final//io.undertow.servlet.handlers.ServletInitialHandler$1.handleRequest(ServletInitialHandler.java:99) keycloak\_1 | at io.undertow.core@2.1.0.Final//io.undertow.server.Connectors.executeRootHandler(Connectors.java:370) keycloak\_1 | at io.undertow.core@2.1.0.Final//io.undertow.server.HttpServerExchange$1.run(HttpServerExchange.java:830) keycloak\_1 | at org.jboss.threads@2.3.3.Final//org.jboss.threads.ContextClassLoaderSavingRunnable.run(ContextClassLoaderSavingRunnable.java:35) keycloak\_1 | at org.jboss.threads@2.3.3.Final//org.jboss.threads.EnhancedQueueExecutor.safeRun(EnhancedQueueExecutor.java:1982) keycloak\_1 | at org.jboss.threads@2.3.3.Final//org.jboss.threads.EnhancedQueueExecutor$ThreadBody.doRunTask(EnhancedQueueExecutor.java:1486) keycloak\_1 | at org.jboss.threads@2.3.3.Final//org.jboss.threads.EnhancedQueueExecutor$ThreadBody.run(EnhancedQueueExecutor.java:1377) keycloak\_1 | at java.base/java.lang.Thread.run(Thread.java:834) ![image](https://global.discourse-cdn.com/free1/uploads/keycloak/original/2X/9/9e6f477b38600553726b3f6ddf107097820da9a4.png) (Just hidden some credentials infos for client privacy)