Hello, I am configuring the social login with google, twitter and github. Everything else works fine until this point, namely, after it's authorized, at the "update account information" page, after I fill out the fields on this page, clicked the "submitted" and I received this error message. 

What could cause this? I followed the instruction carefully, but not sure what caused this.

Context Path:
/auth

Servlet Path:

Path Info:
/realms/myproject/login-actions/first-broker-login

Query String:
code=Rp6yjxlbY0_IIjk8_-IpyOy_x8m_hC0d8zz4t-hp7vI.9ea99589-bf8d-4a13-930a-c58661dfb925

Stack Trace
java.lang.RuntimeException: request path: /auth/realms/myproject/login-actions/first-broker-login
org.keycloak.services.filters.KeycloakSessionServletFilter.doFilter(KeycloakSessionServletFilter.java:75)
io.undertow.servlet.core.ManagedFilter.doFilter(ManagedFilter.java:60)
io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:132)
io.undertow.servlet.handlers.FilterHandler.handleRequest(FilterHandler.java:85)
io.undertow.servlet.handlers.security.ServletSecurityRoleHandler.handleRequest(ServletSecurityRoleHandler.java:62)
io.undertow.servlet.handlers.ServletDispatchingHandler.handleRequest(ServletDispatchingHandler.java:36)
org.wildfly.extension.undertow.security.SecurityContextAssociationHandler.handleRequest(SecurityContextAssociationHandler.java:78)
io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
io.undertow.servlet.handlers.security.SSLInformationAssociationHandler.handleRequest(SSLInformationAssociationHandler.java:131)
io.undertow.servlet.handlers.security.ServletAuthenticationCallHandler.handleRequest(ServletAuthenticationCallHandler.java:57)
io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
io.undertow.security.handlers.AbstractConfidentialityHandler.handleRequest(AbstractConfidentialityHandler.java:46)
io.undertow.servlet.handlers.security.ServletConfidentialityConstraintHandler.handleRequest(ServletConfidentialityConstraintHandler.java:64)
io.undertow.security.handlers.AuthenticationMechanismsHandler.handleRequest(AuthenticationMechanismsHandler.java:58)
io.undertow.servlet.handlers.security.CachedAuthenticatedSessionHandler.handleRequest(CachedAuthenticatedSessionHandler.java:72)
io.undertow.security.handlers.NotificationReceiverHandler.handleRequest(NotificationReceiverHandler.java:50)
io.undertow.security.handlers.SecurityInitialHandler.handleRequest(SecurityInitialHandler.java:76)
io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
org.wildfly.extension.undertow.security.jacc.JACCContextIdHandler.handleRequest(JACCContextIdHandler.java:61)
io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
io.undertow.servlet.handlers.ServletInitialHandler.handleFirstRequest(ServletInitialHandler.java:282)
io.undertow.servlet.handlers.ServletInitialHandler.dispatchRequest(ServletInitialHandler.java:261)
io.undertow.servlet.handlers.ServletInitialHandler.access$000(ServletInitialHandler.java:80)
io.undertow.servlet.handlers.ServletInitialHandler$1.handleRequest(ServletInitialHandler.java:172)
io.undertow.server.Connectors.executeRootHandler(Connectors.java:199)
io.undertow.server.HttpServerExchange$1.run(HttpServerExchange.java:774)
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
java.lang.Thread.run(Thread.java:745)

Caused by: org.jboss.resteasy.spi.UnhandledException: java.lang.NoClassDefFoundError: org/keycloak/broker/provider/BrokeredIdentityContext