For running J!5.1 you must https://fabrikar.com/forums/index.php?wiki/update-from-github/ or include the new file manually https://fabrikar.com/forums/index.php?threads/joomla-5-1-and-fabrik-cannot-find-files-error.54473/post-285151 See also Announcements
Please see our announcement here.
try clearing your browser cache using the developer tool and also do a Cntrl-F5 after enabling the Joomla cache. The site might still be running on the old config.Hmm, I can't replicate that
try clearing your browser cache using the developer tool and also do a Cntrl-F5 after enabling the Joomla cache. The site might still be running on the old config.