This is a rant about how so many apps on many different platforms (TVs, mobile devices, computers, etc…) have decided to not actually show detailed errors any more. Instead, we get something along the lines of:
Oops, somehting went wrong. Please try again later
… and then, well, we get to figure out what just happened and what in the world we need to do about it. And good luck with that, since you have no idea what just failed.
Why software developers?!? Why have you forsaken us?
Most common place I see those is when the site doesn’t want to talk to a known VPN endpoint. Like another mentioned site owners don’t want to given any more info to what they perceive as a possible threat than needed, so they just give a generic failure page.