Minecraft version
1.19.4

Mod version
3.2.1.3

Describe the bug
I was really excited to play this but then when I place the last wither skull, it aint working. The wither isn't spawning. I tried remaking it, nothing. Can anyone help or I will be crying for days cause I cant play this lol

To Reproduce
Steps to reproduce the behavior:

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2. Click on '....'
3. Scroll down to '....'
4. See error

Crash Reports / Logs
Crash reports / logs hosted on pastebin, gist, etc.

Is OptiFine installed?
Specify if you're using OptiFine

Screenshots
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@LvnaTheWorst update?

What mods do have installed?

Check if you have the game rule Mobgriefing to true, and check if you have peaceful mode on

Also please fill out the template next time

Closing until more information is provided