Author of ErrorTracker here. This video is awesome, thanks for making it! I just want to mention that the `use ErrorTracker.Integrations.Plug` is just needed if you are doing extra work on the Endpoint. Most projects won't need to do that as, by default, Phoenix keeps the Endpoint lean and error-free. In such cases the default Phoenix integration will suffice and it doesn't require you to do anything special as it attaches automatically to Phoenix telemetry.
I was literally just thinking a few weeks ago how something drop-in like this would be handy for starting like 99% of MVP apps, rather than immediately going to a third party like Sentry. Similar to what we used to do in the very early Rails days. Very cool!