Minecraft version: 1.12.2
Wizardry version: 4.3.4
Environment: Singleplayer

Issue details: after launching the game the launcher crash due to the mod

Link to crash report :
crash-2021-12-01_00.33.45-client.txt

Looks like an incompatibility with a mod that changes the player's model. You can try pinpointig which mod is that from your list, or you can also try to disable the spell casting animations in the wizardry config as that's where wizardry alters the player model