Where is the config.json file on Windows?

[4r5hw45twh]

Oh, I thought the left side of the path line was host and right was Docker?

That's right, but you put web-config.json in a folder on the host that is already mapped to /config in the container.  Meaning you can't then map a specific file in that to another place in the container.

Huh. Very interesting. It is now working for me since I made a new folder with web-config.json in it. Thanks a ton for your time with this issue!
Should I also be mapping /data or no?
I am just trying to get the best practices down to minimize issues/headaches.
I currently have cache, config, and now config.json mapped/binded (not sure proper terminology).

[TheDreadPirate]

The only mandatory volumes you need to map is /config, that has all your permanent data, and wherever your media library is located. /cache is optional, but its good to provide a permanent location for it so that Jellyfin doesn't have to regenerate the cache.

If your media is in /data, then you would need to map that folder.