Monitors not working - No path could be generated for filename: ''

[buggyfound]

Bug description
Monitors page does not work.
[Error] No path could be generated for filename: ''

Steps to reproduce

1. set artist name as the only tag in Downloads tab, right click, copy to monitors
   Download settings:
   Path: /home/user/adult/grabber/artistname
   Filename: %date:format=yyyy-MM-dd%.%artist%%md5%.%ext%
2. right click, copy to monitors
3. full download artist, run monitor after
4. wait a day
5. monitor
6. Log error message:
   [15:03:08.613][Error] No path could be generated for filename: ''
   Website e621.net, not sure if it effects other sites.

Monitor settings - Download tab
Enabled: Checked
Path: empty
Filename: empty
(it says leave empty to use default settings, I don't think this is working)

Expected behavior
Monitors should download new images since monitor was last ran

Context
Issue has happened on Ubuntu 23.10.1, Fedora 40, and Fedora 41. No special kernel or config changes. Bug has existed in 7.12.2 and 7.13.0. Program works fine otherwise. Forces me to use full downloads when I want to update my archives.

Screenshots

System information
Issue has happened on Ubuntu 23.10.1, Fedora 40, and Fedora 41. No special kernel or config changes. Bug has existed in 7.12.2 and 7.13.0.

Additional context