In 1.20.1 Minecraft, there is a mod called Origins and they use an internal library called Apoli which has a bug in one of its mixins into LivingEntity that will crash when certain modded entities are damaged. For example, damaging Bumblezone's Cosmic Crystal Entity in 1.20.1 will lead to a crash. No newer Minecraft version has this issue as Apoli devs fixed it in 1.20.2.
However, since they do not backport at all, this mod aims to backport the fix to 1.20.1 to stop the crash with Bumblezone (because Bumblezone is my mod lol).
The original issue report: https://github.com/apace100/apoli/issues/177
The fix I backported with this mod: https://github.com/apace100/apoli/commit/ce5a44b80fcd410c98a303ab93357f3c6668263e
Please do not ask for any port to other Minecraft versions as there's nothing to fix there. Also do not ask me to fix other Origins bug. This mod is specifically focused on the one Origins bug that affects my mods the most.
- Edition: Minecraft Java
- File type: .jar
- Minecraft version listed: 1.20.1
- How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
- Where to get it: Opens on Modrinth — not every file is mirrored on our own servers.
Install steps are the general flow for this file type — How to install Minecraft Java mods & modpacks walks through it step by step.
- Ships as origins_apoli_armor_mixin_fix-1.0.2.jar — drop this file into the mods folder
- Download size: 12 KB
- Download link checked 30 Aug 2026 — working
These come from our own check of the pack file, not from the source page.