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java.lang.NullPointerException
java.lang.NullPointerException: 	at org.jenkinsci.plugins.p4.tagging.TagAction.getPort(TagAction.java:141)	at org.jenkinsci.plugins.p4.PerforceScm.buildEnvVars(PerforceScm.java:451)	at hudson.model.AbstractBuild.getEnvironment(AbstractBuild.java:927)	at org.jenkinsci.plugins.p4.PerforceScm.processWorkspaceBeforeDeletion(PerforceScm.java:546)	at hudson.scm.SCM.processWorkspaceBeforeDeletion(SCM.java:236)	at hudson.model.AbstractProject.performDelete(AbstractProject.java:375)	at hudson.model.AbstractItem.delete(AbstractItem.java:589)	at hudson.model.Job.delete(Job.java:688)	at hudson.model.AbstractItem.doDoDelete(AbstractItem.java:550)	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)	at java.lang.reflect.Method.invoke(Method.java:606)	at org.kohsuke.stapler.Function$InstanceFunction.invoke(Function.java:324)	at org.kohsuke.stapler.interceptor.RequirePOST$Processor.invoke(RequirePOST.java:52)	at org.kohsuke.stapler.PreInvokeInterceptedFunction.invoke(PreInvokeInterceptedFunction.java:26)	at org.kohsuke.stapler.Function.bindAndInvoke(Function.java:167)	at org.kohsuke.stapler.Function.bindAndInvokeAndServeResponse(Function.java:100)	at org.kohsuke.stapler.MetaClass$1.doDispatch(MetaClass.java:124)	at org.kohsuke.stapler.NameBasedDispatcher.dispatch(NameBasedDispatcher.java:58)	at org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:746)