This is happening because a Merge Request is checked out 2 times which is causing call for `onCheckout` event listener twice. And this is trying to change the status of the pipeline status to `running` which is already `running`.
I am interested in resolving this issue.
I'm interested in resolving this issue too.
If you now what happened, may be you now how fix it?
Can I help somehow?
Partially fixed by hiding the exception logs https://github.com/jenkinsci/gitlab-branch-source-plugin/pull/89