Minecraft version: 1.12.2
Wizardry version: 4.1.4

Issue details: When I updated the mod, i couldn't get it on working because everytime i tried to run it, it just crashes with Error: java.lang.NoSuchMethodError: electroblob.wizardry.spell.Spell

Link to crash report: https://pastebin.com/rUngnhJ2

That's because extra spells is not yet compatible with the 4.2.0 release of wizardry. You'll have to wait until meldexun updates it or remove the spell pack for the time being.