I've got an odd issue on one website: Whenever we attempt to edit an asset in the CP (i.e. double clicking to bring up the lightbox) we just get the "loading" message and devtools informs me that the asset is 404ing.

Here's what's especially odd: the assets are just fine everywhere else: front-end, thumbnails in the CP, etc.

One more piece of data: it works fine locally, just erring out in production. :(

Any ideas where to start? The container.yaml files are fine, the filesystems are ok.

Answered by Greg Colker! Go to answer.