Can't create/save Units in CoursePress 2.0.1

I upgraded CoursePress Pro from 1.x to 2.0.1 on a development site. Most of the plugins on this site are other WPMUDEV plugins, plus WooCommerce, Yoast, Beaver Builder page builder.

I was trying to save and add new units, but it's not working.

When adding new unit, the wheel just spins and nothing is added.

When trying to save existing unit, I get an error "Something went wrong. Unit was not saved!"

See attachment with screenshots of errors in Chrome console:

Are there any known issues right now with CoursePress Pro 2.0.1?

As a separate issue, I cannot dismiss "Install MarketPress plugin in order to sell courses" noticed. It keeps coming back after page reload.

Any help would be appreciated! I granted WPMUDEV support access to this website.