Failed to load resource: net::ERR_FAILED

Does anybody knows what is this error that i have in chromium console for this mooc?
https://dev.mooc.edu.gr/

I’ve found this https://stackoverflow.com/questions/23688565/failed-to-load-resource-neterr-insecure-response but it’s not the case, we don’t use ip anywhere but the domain

For example this mooc doesnot have this error
https://www.europeanschoolnetacademy.eu/

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: