Most big websites I work with don't show their error details when something goes wrong. Here is an example: my account with Amazon is in trouble and I see nothing except the "We are sorry" message from them. Instead, I believe, would be much better to show me much more technical information and make me part of the development process. That's what we do in our projects: making our technical defects as much visible for end-users as possible, in order to make them fixed faster.

The video is here: https://youtu.be/t1locjBAXYY