If you're running @nextcloud on #fedora, you'll want to upgrade to #Nextcloud 24 before upgrading to Fedora 36 or else you'll get a php compatibility error. I was able to hack the versioncheck.php to override it and upgrade to 24 and then everything was OK, but you'll have a much easier time upgrading nextcloud first.
@vwbusguy @nextcloud thanks for the heads up, I was just going to upgrade to F36 still being on NC23.