We are using OJS 22.214.171.124, which worked fine until recently. Now suddenly we can not add a reviewer to a review. When clicking ‘Add reviewer’ on submission just empty modal window appears:
Actually, it looks like the whole window appears for a moment, a very short blink and then only the above window stays on.
Clicking ‘Create New Reviewer’ or ‘Enroll Existing User’ work normally.
There is the following error in the console:
I tried with templates and data cache clearing, new incognito window (so no local caching) - all the same.
Any idea how to solve this or at least investigate further?