Describe the bug
https://mclo.gs/daoq3Fa

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To Reproduce
Steps to reproduce the behavior:
I heard a backpack disc playing from a zombie, then found it and tried killing it, once I did. It crashed with this log. Now I can't log back into this world.

Expected behavior
I wanna log back in with my backpacks.

Versions
1.20.4 aka 3.20.6.30 (port) & 0.6.26.40 (ported core)

I went onto a different world, killed a zombie with a backpack and it ended up crashing my game again. Please fix or tell how to fix !

Fixed in new version