This was caused because MDL-82742 reverted the patch from MDL-78648 and now we started getting that random again.
MDL-78648 Random "test_get_user_badge_by_hash" unit test failure
MDL-82742 Web service core_badges_get_user_badge_by_hash does not return the badge recipient
Error rendering 'clockify-timesheets-time-tracking-reports:timer-sidebar'. Please contact your Jira administrators.