Cannon has been updated!
Delete item on the character, then the File to avoid Corruptions!
Then Respawn in /admin in Singleplayer and use Dyes, Abilitys, Skins and Effects to Customize the cannon by just pulling and rightclicking the crafted Custom Chips on the Cannon!
So I tried it and ran into two issues.
1: You duplicate the nofalldamage status effect for some reason, causing the game to crash
2: I deleted the nofalldamage status effect in your mod file (which made it work) and then when i tried to spawn it, the fanon cannon description caused me to crash again.