Error: Failed to load resource: net::ERR_CONNECTION_REFUSED adsbygoogle.js

Sometimes, AdSense ads are not visible on your website.
If your are opening the browser console (on chrome with F12) and you get the error “Failed to load resource: net::ERR_CONNECTION_REFUSED adsbygoogle.js”, it could mean that you are behind a proxy, using a VPN tunnel or more likely that your browser is running an ad blocker.
To resolve the issue deactivate your ad blocker and your AdSense ads should be visible again.