java.lang.IllegalStateException: Cannot open session, connection is not authenticated.
	at com.trilead.ssh2.Connection.openSession(Connection.java:1127)
	at org.jenkinsci.plugins.gitclient.trilead.TrileadSession.exec(TrileadSession.java:24)
	at org.eclipse.jgit.transport.TransportGitSsh$SshFetchConnection.<init>(TransportGitSsh.java:248)
	at org.eclipse.jgit.transport.TransportGitSsh.openFetch(TransportGitSsh.java:147)
	at org.eclipse.jgit.transport.FetchProcess.executeImp(FetchProcess.java:136)
	at org.eclipse.jgit.transport.FetchProcess.execute(FetchProcess.java:122)
	at org.eclipse.jgit.transport.Transport.fetch(Transport.java:1108)
	at org.eclipse.jgit.api.FetchCommand.call(FetchCommand.java:128)
	at org.eclipse.jgit.api.CloneCommand.fetch(CloneCommand.java:178)
	at org.eclipse.jgit.api.CloneCommand.call(CloneCommand.java:125)
	at org.jenkinsci.plugins.gitclient.JGitAPIImpl$3.execute(JGitAPIImpl.java:700)
	at org.jenkinsci.plugins.gitclient.RemoteGitImpl$CommandInvocationHandler$1.call(RemoteGitImpl.java:150)
	at org.jenkinsci.plugins.gitclient.RemoteGitImpl$CommandInvocationHandler$1.call(RemoteGitImpl.java:143)
	at hudson.remoting.UserRequest.perform(UserRequest.java:118)
	at hudson.remoting.UserRequest.perform(UserRequest.java:48)
	at hudson.remoting.Request$2.run(Request.java:326)
	at hudson.remoting.InterceptingExecutorService$1.call(InterceptingExecutorService.java:72)
	at java.util.concurrent.FutureTask.run(Unknown Source)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
	at hudson.remoting.Engine$1$1.run(Engine.java:63)
	at java.lang.Thread.run(Unknown Source)