I am trying to create a Pipeline job for a github project and while configuring the Build Trigger with a Build Github Pull Request the Save is causing a NPE.
In the pipeline I have provided the git project URL and PR trigger with a Cron tabline of '* * * * *' and trigger mode 'CRON with persisted data'. I tried varying the trigger mode and cron tabline settings but I always get the NPE.
As an experiment, I created a new Freestyle project and I noticed that for the style of project one is presented with the 'Source Code Management' block where one picks the repo and credentials, as well as the git project URL and the githhub pull request parameters. I am able to save that project.
For the pipeline job the git repo is being clone in the pipeline code.