After Updating the Pipeline Plugins and the Uploader plugin, the later plugin throws an Null-Pointer-Exception when it is executed.

Here is the Errormessage:
java.lang.NullPointerException
at sp.sd.nexusartifactuploader.steps.NexusArtifactUploaderStep$Execution.run(NexusArtifactUploaderStep.java:224)
at sp.sd.nexusartifactuploader.steps.NexusArtifactUploaderStep$Execution.run(NexusArtifactUploaderStep.java:203)
at org.jenkinsci.plugins.workflow.steps.AbstractSynchronousNonBlockingStepExecution$1$1.call(AbstractSynchronousNonBlockingStepExecution.java:47)
at hudson.security.ACL.impersonate(ACL.java:213)
at org.jenkinsci.plugins.workflow.steps.AbstractSynchronousNonBlockingStepExecution$1.run(AbstractSynchronousNonBlockingStepExecution.java:44)
at java.util.concurrent.Executors$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)