canMerge function from another plugin is causing issues

[Mathieu Yargeau]

I have a plugin doing a simple canMerge check like so:

pullRequestService.canMerge(pullRequest.getToRef().getRepository().getId(), pullRequest.getId())

The mergeability object it returns has a meargeability to false for most of my pull requests, and the only veto found has this message : "The merge check com.bolyuba.stash.plugin.stash-build-status-plugin failed due to an unexpected error. Please contact your system administrator for help."

If I disable your plugin, everything works fine in mine. Do you have an idea of what might be the issue? I have Bitbucket Server 4.3.2 and your plugin version 4.0.2.1.