Strange "assertion failed" error with some else's user name

The thing that makes it especially strange is that it looks like it's referencing a user directory for somebody named "Jenkins" but I don't know anyone by that name and there's no such path on this or any of our machines. Makes me wonder if a hard-coded path from someone's local dev environment accidentally got merged.
Here's what happened. I had been working on this project for a while with no issues but then, while making cuts on a clip of some 4K Cinema DNG footage, I suddenly got the red "media offline" screen. The file still exists and plays just fine in the source viewer and other clips from this file in the same timeline are also playing fine. Interestingly, when I delete the render cache I can see and scrub through the clip but after it's rendered it says "media offline." I imagine that probably means something. Perhaps it's coincidence but, ever since this happened, I get these two error messages whenever it tries to autosave.
My cache drive filled up lol
Still, a strange error message, what with someone else's user name in it.