This is the actual tech, rather than a commercial solution:
https://w3c.github.io/network-error-logging/#introduction
https://developer.mozilla.org/en-US/docs/Web/HTTP/Network_Er...
https://w3c.github.io/network-error-logging/#introduction
https://developer.mozilla.org/en-US/docs/Web/HTTP/Network_Er...
By definition you have to run such a service entirely separate from your own infrastructure: you should use a different CA than your other site(s), a different domain name for sure, preferably a different infrastructure host etc. It makes a lot of sense to use something like the Report URI service for it.