Jellyfin shows nonexistent video

[hagenlund]

Today I discovered a new item listed among the tv series on my version 10.8.10 Windows Jellyfin server. It's called "Pursue and capture" and the details say the file should exist in the Videos\Captures folder that Windows always makes on it's own within your Videos folder. However, that folder is empty. When I try to play the "video" in Jellyfin, I get a "source error" or a "Playback Error This client isn't compatible with the media and the server isn't sending a compatible media format." depending on whether I'm trying to play it from my phone or desktop browser.

If I try to delete the video from within Jellyfin, I see the message "There was an error deleting the item from the server. Please check that Jellyfin has write access to the media folder and try again." 
The "everyone" group has all rights on that folder, same as my entire library. 

No new logs become visible in the Logs menu when any of this happens.

I've tried to rescan my library, to no effect.
I've never heard of any tv series called "pursue and capture".
The creation date on the file is the same as on the Captures folder, august 22'nd 2023.

Can anyone help me explain this and get rid of this item?

[bitmap]

Delete the folder on the host rather than via Jellyfin? Is there any info on the media file when you try through Jellyfin (the kebab you go through to delete and media info rather than delete)? Is there a reason you chose an existing system folder to mount as your media folder rather than housing your media in a location all its own?