Fix has been pushed to the copy linked in the main post (and right here!), and versioning has been updated to 7.1.2
If you would rather fix this on your own copy, only UserAPI.gs received small changes to lines 37-40:
OLD
const factionPerks = userData.faction_perks || [];
const propertyPerks = userData.property_perks || [];
const educationPerks = userData.education_perks || [];
const jobPerks = userData.job_perks || [];
can be replaced by
NEW
const factionPerks = userData.perks?.faction || [];
const propertyPerks = userData.perks?.property || [];
const educationPerks = userData.perks?.education || [];
const jobPerks = userData.perks?.job || [];
Thanks all <3