Jomsocial didn't work on Joomla 4, who knows why?

Question

Joomla

writes
Error found.
0 Class 'JString' not found

Answer 1

jomsocial paid, write to support https://www.jomsocial.com/pricing
In anticipation, joomla 4 still in beta extensions do not have to be ready to install on it
joomla 3 will be supported from the release date of version 3.10 for another two years proof

Answer 2

It's still early for Joomla 4. Take your time, the next 2-3 years Joomla 3 is the most workhorse.