hudson.util.HudsonFailedToLoad: org.jvnet.hudson.reactor.ReactorException: java.io.IOException: Unable to read /var/lib/jenkins/config.xml at hudson.WebAppMain$3.run(WebAppMain.java:234) Caused by: org.jvnet.hudson.reactor.ReactorException: java.io.IOException: Unable to read /var/lib/jenkins/config.xml at org.jvnet.hudson.reactor.Reactor.execute(Reactor.java:269) at jenkins.InitReactorRunner.run(InitReactorRunner.java:44) at jenkins.model.Jenkins.executeReactor(Jenkins.java:912) at jenkins.model.Jenkins.<init>(Jenkins.java:811) at hudson.model.Hudson.<init>(Hudson.java:82) at hudson.model.Hudson.<init>(Hudson.java:78) at hudson.WebAppMain$3.run(WebAppMain.java:222)