Hi there,
Can you please provide more information about exactly what’s happening? How exactly do you have things set up, what are the exact version numbers of Jetpack, Multisite and WordPress, what exactly is the error you see, and under which circumstances does it occur/what are you trying to do when you see it?
Jetpack 8.0 has been out since 3 December 2019, so for more than a month, and we haven’t had any reports of it causing problems with WordPress Multisite networks, so this could be a conflict with another plugin on your site.
Please check if disabling everything else except Jetpack still gives the error. If not, it’s another plugin causing this. In that case, re-enable your plugins one at a time until you get the error again to determine which one is causing the problem.