Jenkins Test Result Analyzer doesn't display results

I have been using jenkins' TRA plugin for a while and all of a sudden it stopped showing results for some of the jobs I'm running. The message, which I'm getting:

No build data retrieved. You may need to select a Module.

I've read this answer but I'm already using Publish JUnit test result report under Post-build Actions.

Job's workspace path is correct, all of the test report .xml files are there.

What am I missing?