[keycloak-user] Keycloak Adapter Error

I am using Keycloak Beta 1 Snapshot as my SSO but when any user logs in it gives a 403 forbidden and the error shown below. Any idea what went wrong? ERROR [org.keycloak.adapters.OAuthRequestAuthenticator] (default task-7) failed to turn code into token: javax.net.ssl.SSLPeerUnverifiedException: peer not authenticated at sun.security.ssl.SSLSessionImpl.getPeerCertificates( SSLSessionImpl.java:397) [jsse.jar:1.7.0_45] at org.apache.http.conn.ssl.AbstractVerifier.verify( AbstractVerifier.java:128) at org.apache.http.conn.ssl.SSLSocketFactory.connectSocket( SSLSocketFactory.java:572) at org.apache.http.impl.conn.DefaultClientConnectionOperator.openConnection( DefaultClientConnectionOperator.java:180) at org.apache.http.impl.conn.AbstractPoolEntry.open( AbstractPoolEntry.java:151) at org.apache.http.impl.conn.AbstractPooledConnAdapter.open( AbstractPooledConnAdapter.java:125) at org.apache.http.impl.client.DefaultRequestDirector.tryConnect( DefaultRequestDirector.java:640) at org.apache.http.impl.client.DefaultRequestDirector.execute( DefaultRequestDirector.java:479) at org.apache.http.impl.client.AbstractHttpClient.execute( AbstractHttpClient.java:906) at org.apache.http.impl.client.AbstractHttpClient.execute( AbstractHttpClient.java:805) at org.apache.http.impl.client.AbstractHttpClient.execute( AbstractHttpClient.java:784) at org.keycloak.adapters.ServerRequest.invokeAccessCodeToToken( ServerRequest.java:78) [keycloak-adapter-core-1.0-beta-1-SNAPSHOT.jar:] at org.keycloak.adapters.ServerRequest.invokeAccessCodeToToken( ServerRequest.java:55) [keycloak-adapter-core-1.0-beta-1-SNAPSHOT.jar:] at org.keycloak.adapters.OAuthRequestAuthenticator.resolveCode( OAuthRequestAuthenticator.java:256) [keycloak-adapter-core-1.0-beta-1-SNAPSHOT.jar:] at org.keycloak.adapters.OAuthRequestAuthenticator.authenticate( OAuthRequestAuthenticator.java:205) [keycloak-adapter-core-1.0-beta-1-SNAPSHOT.jar:] at org.keycloak.adapters.RequestAuthenticator.authenticate( RequestAuthenticator.java:59) [keycloak-adapter-core-1.0-beta-1-SNAPSHOT.jar:] at org.keycloak.adapters.undertow.ServletKeycloakAuthMech.authenticate( ServletKeycloakAuthMech.java:38) [keycloak-undertow-adapter-1.0-beta-1-SNAPSHOT.jar:] at io.undertow.security.impl.SecurityContextImpl$AuthAttempter.transition( SecurityContextImpl.java:281) [undertow-core-1.0.0.Final.jar:1.0.0.Final] at io.undertow.security.impl.SecurityContextImpl$AuthAttempter.transition( SecurityContextImpl.java:298) [undertow-core-1.0.0.Final.jar:1.0.0.Final] at io.undertow.security.impl.SecurityContextImpl$AuthAttempter.access$100( SecurityContextImpl.java:268) [undertow-core-1.0.0.Final.jar:1.0.0.Final] at io.undertow.security.impl.SecurityContextImpl.attemptAuthentication( SecurityContextImpl.java:131) [undertow-core-1.0.0.Final.jar:1.0.0.Final] at io.undertow.security.impl.SecurityContextImpl.authTransition( SecurityContextImpl.java:106) [undertow-core-1.0.0.Final.jar:1.0.0.Final] at io.undertow.security.impl.SecurityContextImpl.authenticate( SecurityContextImpl.java:99) [undertow-core-1.0.0.Final.jar:1.0.0.Final] at io.undertow.security.handlers.AuthenticationCallHandler.handleRequest( AuthenticationCallHandler.java:50) [undertow-core-1.0.0.Final.jar:1.0.0.Final] at io.undertow.security.handlers.AuthenticationConstraintHandler.handleRequest( AuthenticationConstraintHandler.java:51) [undertow-core-1.0.0.Final.jar:1.0.0.Final] at io.undertow.security.handlers.AbstractConfidentialityHandler.handleRequest( AbstractConfidentialityHandler.java:45) [undertow-core-1.0.0.Final.jar:1.0.0.Final] at io.undertow.servlet.handlers.security.ServletConfidentialityConstraintHandler.handleRequest( ServletConfidentialityConstraintHandler.java:61) [undertow-servlet-1.0.0.Final.jar:1.0.0.Final] at io.undertow.servlet.handlers.security.ServletSecurityConstraintHandler.handleRequest( ServletSecurityConstraintHandler.java:56) [undertow-servlet-1.0.0.Final.jar:1.0.0.Final] at io.undertow.security.handlers.AuthenticationMechanismsHandler.handleRequest( AuthenticationMechanismsHandler.java:58) [undertow-core-1.0.0.Final.jar:1.0.0.Final] at io.undertow.servlet.handlers.security.CachedAuthenticatedSessionHandler.handleRequest( CachedAuthenticatedSessionHandler.java:70) [undertow-servlet-1.0.0.Final.jar:1.0.0.Final] at io.undertow.security.handlers.SecurityInitialHandler.handleRequest( SecurityInitialHandler.java:76) [undertow-core-1.0.0.Final.jar:1.0.0.Final] at io.undertow.server.handlers.PredicateHandler.handleRequest( PredicateHandler.java:25) [undertow-core-1.0.0.Final.jar:1.0.0.Final] at org.wildfly.extension.undertow.security.jacc.JACCContextIdHandler.handleRequest( JACCContextIdHandler.java:61) at io.undertow.server.handlers.PredicateHandler.handleRequest( PredicateHandler.java:25) [undertow-core-1.0.0.Final.jar:1.0.0.Final] at org.keycloak.adapters.undertow.ServletPreAuthActionsHandler.handleRequest( ServletPreAuthActionsHandler.java:54) [keycloak-undertow-adapter-1.0-beta-1-SNAPSHOT.jar:] at io.undertow.server.handlers.PredicateHandler.handleRequest( PredicateHandler.java:25) [undertow-core-1.0.0.Final.jar:1.0.0.Final] at io.undertow.servlet.handlers.ServletInitialHandler.handleFirstRequest( ServletInitialHandler.java:240) [undertow-servlet-1.0.0.Final.jar:1.0.0.Final] at io.undertow.servlet.handlers.ServletInitialHandler.dispatchRequest( ServletInitialHandler.java:227) [undertow-servlet-1.0.0.Final.jar:1.0.0.Final] at io.undertow.servlet.handlers.ServletInitialHandler.access$000( ServletInitialHandler.java:73) [undertow-servlet-1.0.0.Final.jar:1.0.0.Final] at io.undertow.servlet.handlers.ServletInitialHandler$1.handleRequest( ServletInitialHandler.java:146) [undertow-servlet-1.0.0.Final.jar:1.0.0.Final] at io.undertow.server.Connectors.executeRootHandler(Connectors.java:168) [undertow-core-1.0.0.Final.jar:1.0.0.Final] at io.undertow.server.HttpServerExchange$1.run(HttpServerExchange.java:687) [undertow-core-1.0.0.Final.jar:1.0.0.Final] at java.util.concurrent.ThreadPoolExecutor.runWorker( ThreadPoolExecutor.java:1145) [rt.jar:1.7.0_45] at java.util.concurrent.ThreadPoolExecutor$Worker.run( ThreadPoolExecutor.java:615) [rt.jar:1.7.0_45] at java.lang.Thread.run(Thread.java:744) [rt.jar:1.7.0_45]