The plugin does not work in combination with a standard multibranch pipeline project. I have added a pipeline step for the LastChangesPublisher, which has been suggested by the snippet generator.

My Jenkinsfile looks like:

node('master') {
stage('prep')

{ checkout scm step([$class: 'LastChangesPublisher', format: 'LINE', matchWordsThreshold: '0.25', matching: 'NONE', matchingMaxComparisons: '1000', showFiles: true, synchronisedScroll: true]) }

}

My SCM system is Git and configured in the project configuration. As soon as Jenkins reaches the LastChangesPublisher step, the job exists with the following NPE:

java.lang.NullPointerException
at com.github.jenkins.lastchanges.LastChangesPublisher.perform(LastChangesPublisher.java:97)
at org.jenkinsci.plugins.workflow.steps.CoreStep$Execution.run(CoreStep.java:69)
at org.jenkinsci.plugins.workflow.steps.CoreStep$Execution.run(CoreStep.java:59)
at org.jenkinsci.plugins.workflow.steps.AbstractSynchronousNonBlockingStepExecution$1$1.call(AbstractSynchronousNonBlockingStepExecution.java:52)
at hudson.security.ACL.impersonate(ACL.java:221)
at org.jenkinsci.plugins.workflow.steps.AbstractSynchronousNonBlockingStepExecution$1.run(AbstractSynchronousNonBlockingStepExecution.java:49)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)