Wow, that’s awesome. So happy to have helped do something constructive!
I had to be logged in as an admin, not an editor, to my site (I have 2 different roles). That did the trick for me; hope it’s that simple for you.
best
NB
https://jmp.sh/9jT9WpP
The link is the screenshot of the console error.
I’m on BigSur 11.4, Chrome Version 93.0.4577.25
Hosting provider is siteground
