Failed to load resource: net::ERR_FAILED

Does anybody knows what is this error that i have in chromium console for this mooc?

I’ve found this but it’s not the case, we don’t use ip anywhere but the domain

For example this mooc doesnot have this error

Thank you in advance

I fail to reproduce the issue. However when my adblocker is enabled I receive notifications about blocked requests from googleads and doubleclick:

Congrats on launching the website :slight_smile:

Ok thank you very much! :slight_smile: