I think I’ve figure out the issue in the code.
assets/js/followers/wcfmu-script-followers.js doesn’t supply a nonce in the ajax call, which probably goes as security paramter.
If you can include that parameter in all the corresponding script, that should solve all such issues.
No, the error is occurring despite a good internet connection.
All the other functionality is working except this error.
The site is still under development, and the error is occurring on localhost. Clearing cache and cookies didn’t help. The problem persists.