That wouldn’t fall under a single trope, but would be a combination of several tropes. After The End would be a requirement, and for technology that is like magic to those who live in the world would be Lost Technology.

My dog also did the same thing, but it was to the front hall.

For anyone interested, this happened in 2021, as reported on by The Guardian.

Thank you. I’ll be changing my password.

Is that why I got logged off?

Or you can make it a little pond.