Hey there and welcome to the forums!
I see you tried the following:
- Deactivated all other plugins? Yes
- Switched to a default theme? Yes
Did you happen to notice a difference when running the latest versions of the plugins (4.2.2)? How about when deactivating all other plugins and switching to a default theme together?
The reason I ask is because I do not get the same JS error in the console on my test site (screenshot). That makes me think there is a conflict with either the theme, another installed plugin, or both.
Let’s start with that and see what we find. 🙂
Thanks!
Geoff