I don't know when the error starts (there's 123 weapons) but when i add some it works, and when i get to a certain point it causes an error. So can the mod only config a certain amount of weapons or?
Here is the most recent crash I've had: crash-2021-08-13_09.03.11-fml.txt
Here is a config file with all of what I want to add: KK config.txt
Here is what is placed in when the errors start: epicfight.txt

Update: it errors after 14 custom weapons are put in, is 14 the max?

Details:
Mod File: EpicFightMod-1.16.5-4.1.6.jar
Failure message: Epic Fight Mod (epicfight) encountered an error during the common_setup event phase
net.minecraft.util.ResourceLocationException: Non [a-z0-9/.-] character in path of location: kingdomkeys:Darkgnaw
Mod Version: 4.1.6
Mod Issue URL: NOT PROVIDED
Exception message: net.minecraft.util.ResourceLocationException: Non [a-z0-9/.-] character in path of location: kingdomkeys:Darkgnaw

You've used uppercase in the registryname. They don't allow using that.