Minecraft version: 1.12.2
Wizardry version: 4.3.4
Environment: Server

Issue details: There was an error when using the Arcane workbench to install spells on Sword

Other mods involved: https://github.com/FavouriteDragon/Arcane-Essentials

Link to crash report (if applicable): https://paste.ubuntu.com/p/5PXWD4g3Cw/

Wrong issue tracker, report this to the Arcane Essentials issue tracker