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.
Hugh Messenger said:It's definitely nothing to do with Fabrik. Even though Rob and I are both male, and hence don't possess the Crayola gene (the genetic trait that gives women an actual sense of color styling), neither of us have or ever would put that color in any of the standard templates!
-- hugh