As of 2022-10-25, Tiki doesn't support PHP 8.0 or 8.1 for reasons explained here: https://tiki.org/forumthread78628-Tiki-24-and-PHP-8
There is no point in reporting bugs on PHP 8.x unless you have the development skills to actually do the work, on you have financial resources to sponsor the work.
((Tiki24)) and ((Tiki25)) work beautifully on PHP 7.4.x
On this #tikiexpresstutorial, using #tiki19 I’ll show you:
How to enable a feature from the Control Panels
How to enable a Global Feature from the features panel
How to enable an Interface feature
A quick overview of the Programmer features
And where to look for feature options