I have exactly the same issue.
Is there any ETA when it is fixed?
Does anybody work on this issue?
It blocks us from using pit mutation plugin in Jenkins.
Thanks.

I was able to fix this. Here is the diff:

---- src/main/java/org/jenkinsci/plugins/pitmutation/PitProjectAction.java ----
index e7a76b4..73a7b7c 100644
@@ -15,12 +15,16 @@ public class PitProjectAction extends Actionable implements ProminentProjectActi
   public PitProjectAction(AbstractProject<?, ?> project) {
     this.project = project;
 
-    PitPublisher cp = (PitPublisher) project.getPublishersList().get(PitPublisher.DESCRIPTOR);
+//    PitPublisher cp = (PitPublisher) project.getPublishersList().get(PitPublisher.DESCRIPTOR);
 //    if (cp != null) {
 //      onlyStable = cp.getOnlyStable();
 //    }
   }
 
+  public AbstractProject<?, ?> getProject() {
+    return project;
+  }
+
   /**
    * Getter for property 'lastResult'.
    *

Great to see fix, Thank you Leroy Kendall . All these days as alternative I have configured HTML report to show up PIT results in CI.

Code changed in jenkins
User: Ed Kimber
Path:
src/main/java/org/jenkinsci/plugins/pitmutation/PitProjectAction.java
http://jenkins-ci.org/commit/pitmutation-plugin/aa2a09a00c8854fc08e9af819500c5fc9beb58f3
Log:
JENKINS-31779 Fix by Leroy Kendall

leroykendall Thanks very much for the fix!! I have put your changes in a new release which should show up in the update center soon.

edwardk Stil have the same problem with 1.0-13 and there is no newer version yet. Probably you are very busy. It would be appreciated this fix is released? Can we help?

Hello edwardk,

could you please say, when are you going to release new version? We have the same problem as described.

ilubenets to workaround this issue I suggest just to downgrade maven.pitest.plugin.version to 1.1.9

akhalymon yes, it works on version 1.1.9. Thanks a lot!

akhalymon Thnx, with version 1.1.9 it works

Seems like it might be a duplicate.