Hello! Recently I've made my own mod pack, and whenever I launch up Minecraft, I get an error.

Failure message: Spartan Weaponry: Ice and Fire (swiaf) encountered an error during the load_registries event phase
java.lang.NullPointerException: null

Is there any fix to this?
(also, I'm not very experienced with modding so I know almost nothing about mods and mod errors, etc.)

Thanks in advance.

Check if your mods' versions are the latest, if yes then please send the full crash report.

inactive, feel free to reopen later