it.dataone.site.foundation.service.auth.AuthenticationException: It has not been possible to contact the data server. Please try again later
	at it.dataone.valagro.ehub.portal.service.auth.EhubAuthenticator.authenticate(EhubAuthenticator.java:109)
	at it.dataone.valagro.ehub.portal.service.auth.EhubAuthenticator.authenticate(EhubAuthenticator.java:64)
	at it.dataone.valagro.ehub.portal.component.LoginPanel.doLogin(LoginPanel.java:176)
	at it.dataone.valagro.ehub.portal.component.LoginPanel.handleLoginRequest(LoginPanel.java:260)
	at sun.reflect.GeneratedMethodAccessor445.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at net.engio.mbassy.dispatch.ReflectiveHandlerInvocation.invoke(ReflectiveHandlerInvocation.java:29)
	at net.engio.mbassy.dispatch.MessageDispatcher.dispatch(MessageDispatcher.java:30)
	at net.engio.mbassy.dispatch.FilteredMessageDispatcher.dispatch(FilteredMessageDispatcher.java:42)
	at net.engio.mbassy.subscription.Subscription.publish(Subscription.java:72)
	at net.engio.mbassy.bus.MessagePublication.execute(MessagePublication.java:49)
	at net.engio.mbassy.bus.MBassador.publish(MBassador.java:66)
	at net.engio.mbassy.bus.publication.SyncAsyncPostCommand.now(SyncAsyncPostCommand.java:26)
	at it.dataone.site.foundation.service.event.MbassadorEventHandlingService.post(MbassadorEventHandlingService.java:51)
	at it.dataone.site.foundation.BasePortalUI.receiveEvent(BasePortalUI.java:217)
	at com.vaadin.ui.JavaScript.lambda$new$ed2c2b73$1(JavaScript.java:60)
	at sun.reflect.GeneratedMethodAccessor133.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at com.vaadin.server.ServerRpcManager.applyInvocation(ServerRpcManager.java:155)
	at com.vaadin.server.ServerRpcManager.applyInvocation(ServerRpcManager.java:116)
	at com.vaadin.server.communication.ServerRpcHandler.handleInvocation(ServerRpcHandler.java:445)
	at com.vaadin.server.communication.ServerRpcHandler.handleInvocations(ServerRpcHandler.java:410)
	at com.vaadin.server.communication.ServerRpcHandler.handleRpc(ServerRpcHandler.java:274)
	at com.vaadin.server.communication.UidlRequestHandler.synchronizedHandleRequest(UidlRequestHandler.java:90)
	at com.vaadin.server.SynchronizedRequestHandler.handleRequest(SynchronizedRequestHandler.java:40)
	at com.vaadin.server.VaadinService.handleRequest(VaadinService.java:1602)
	at com.vaadin.server.VaadinServlet.service(VaadinServlet.java:445)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:725)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:291)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:219)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:106)
	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:506)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:142)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)
	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:610)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:537)
	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1081)
	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:658)
	at org.apache.coyote.http11.Http11NioProtocol$Http11ConnectionHandler.process(Http11NioProtocol.java:222)
	at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1570)
	at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1527)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
	at java.lang.Thread.run(Thread.java:745)
Caused by: java.net.ProtocolException: Expected leading [0-9a-fA-F] character but was 0x3c
	at okhttp3.internal.http1.Http1Codec$ChunkedSource.readChunkSize(Http1Codec.java:476)
	at okhttp3.internal.http1.Http1Codec$ChunkedSource.read(Http1Codec.java:449)
	at okio.RealBufferedSource.readAll(RealBufferedSource.java:173)
	at retrofit2.Utils.buffer(Utils.java:298)
	at retrofit2.OkHttpCall.parseResponse(OkHttpCall.java:203)
	at retrofit2.OkHttpCall.execute(OkHttpCall.java:180)
	at it.dataone.valagro.ehub.portal.service.auth.EhubAuthenticator.authenticate(EhubAuthenticator.java:79)
	... 51 common frames omitted