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.
those aren't the same SUB domainIt jumps to the same domain url as the main site, http://johnwicki.com/index.php/19 from http://www.johnwicki.com/index.php/client-quote