Errors when trying to follow instagram accounts

[emceeaich]

Before you start.

• [x] I have checked the Common Problems page.
• [x] I have searched the issue tracker for a bug that matches the one I want to file, without success.

Desktop (please complete the following information):

• OS: Linux (Ubunut 19.10)
• Browser: Firefox
• Version: 77
• URL you are attempting to follow: https://www.instagram.com/bffdotfm/

Describe the bug

Attempt to follow account on instagram, get error message:

can't access property "namespaces", e is undefined

Looks like a JSON return changed format?

Thanks