In the course of my work I sometimes test features on unreleased, upcoming versions of browsers. Earlier this week I opened up the upcoming version of Chrome only to find that the Medium’s development environment — the system we use to build Medium every day — wouldn’t load. Instead, all I saw was this error:
Our development environment worked in the stable version of Chrome, so there had to be something different about this new version. After some sleuthing, I figured out what had changed.