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.
Hi @troesterIt seems you are the first one using this.
Can you try in components\com_fabrik\router.php
change line 210 to
if (!$menuItem instanceof Joomla\CMS\Menu\MenuItem || !isset($query['view']))
and after line 221 add
if (isset($query['lang'])) unset($query['lang']);
Besides updating code as above in what release should one expect to see this fixed?Now added.