do you have the Dependency script that was provided? And made sure its installed correctly? Noone else has stated this problem so i can only assume its a user error.
all you would need is Badger_Discord_API and mysql-async, mhm maybe just make sure you have the right roles on the discord or make sure FiveM is detecting your discord (you have to be using the app and not the web browser). Also make sure you go into the server.lua to config the rewards Here’s an example 
Unknown font file Teko in F8 when starting the script