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java.lang.NullPointerException at org.jenkinsci.main.modules.instance_identity.InstanceIdentity.getPublic(InstanceIdentity.java:81) at org.jenkinsci.modules.launchd_slave_installer.ComputerListenerImpl.onOnline(ComputerListenerImpl.java:27) at jenkins.model.Jenkins.<init>(Jenkins.java:840) at hudson.model.Hudson.<init>(Hudson.java:81) at hudson.model.Hudson.<init>(Hudson.java:77) at hudson.WebAppMain$2.run(WebAppMain.java:214)