Exception: name 'get_image_size' is not defined

[tartpvule]

Using FanFicFare CLI on ArchLinux, freshly installed from the AUR package (fanficfare-git) with no configuration changes.

0. python --version -> Python 3.9.1
fanficfare --version -> Version: 3.27.4
1. Pick a random story with images somewhere. Test URL: https://forums.spacebattles.com/threads/a-man-rants-at-a-camera-for-hours-on-end-nier-automata-somehow.909146/
2. fanficfare -o "include_images=true" "https://forums.spacebattles.com/threads/a-man-rants-at-a-camera-for-hours-on-end-nier-automata-somehow.909146/"
3. Got (scrubbed date and time)

FFF: WARNING: 2021-01-0x xx:xx:xx,xxx: story.py(1303): Failed to process cover_min_size from personal.ini:['10', '10']
Exception: name 'get_image_size' is not defined

The download goes on and an epub is produced with the story. The image (a "tongue" smily) is also properly included.
I am not entirely sure what a practical impact, if any, of the exception is.