Render suddenly purple

Today, without changing anything at all, my render suddenly started turning out purple. All my backups (excluding the ones with a different filename) were affected as well. Dropbox automatically keeps backups, and even their backups were purple.

I have absolutely no idea what’s going on, the material colours are still the same and so is the lighting.
Render from today:

Composited render from yesterday:

I’ve even tested on different computers by the way, still turned out purple.

check the world material. happened to me when i moved the hdri image and blender couldn’t find it anymore

I figured as much, but removing the texture didn’t help. Now I redownloaded the texture and put it back, and it works again. Thank you very much!