Errors / Network errors

net::ERR_NAME_NOT_RESOLVED

The page asked for something on a web address that does not exist, or no longer does.

Whatever came from that address (a script, an image, a font) is missing.

Why it happens

A domain that expired or was shut down: an old analytics tool, a dead CDN, a vendor that went out of business, still referenced by the page.
A typo in a URL, or a subdomain that was never created in DNS.
On the visitor's side: a DNS problem, a VPN, or a network that blocks the domain.

How to fix it

Look up the domain (dig or any DNS lookup site): no answer means it is gone; remove or replace the reference.
If it is your own subdomain, add the DNS record.
If it only fails for some visitors, it is their network, not your site.

Whose problem it is

Either the site's own code or a third party's, depending on where it comes from.

Does your site have it?

Free, no account. We open your page and four more in a clean Chrome and list every error like this one, with the page and the click that caused it. How the free page check works.

Often seen with

TypeError: Failed to fetchThe page tried to get data from a server and the request never completed.
ERR_CONNECTION_REFUSEDThe server at that address exists but refused to take the connection.