Youtube Tracker with Google Apps Script error

I use this Google Apps Script for track YouTube views https://github.com/aliciawilliams/youtube-tracker).
The script work, but, everytime he run, I have this error.

TypeError: Cannot read property ‘split’ of undefined

extractVideoIdFromUrl @ Code.gs:90

(anonyme) @ Code.gs:39

markVideos @ Code.gs:21

I tried to find a solution, but I must be missing some information.

Any idea of what is the problem ?

Thank you for your help.