Lol. Your mod is causing a crash with Mythic Mounts.
TheButterbrotMan opened this issue ยท 3 comments
This is a bug in Mythic Mounts.
They force-cast class net.minecraft.class_638 (yarn mapping: ClientWorld) to class net.minecraft.class_3218 (yarn mapping: ServerWorld), without checking if they are server side. That is what I can see from the crash log alone.
In vanilla, isBreedingItem() is a very simple check, but they likely checked in the one place it gets called from the client. That's why it doesn't crash without my mod. After a cursory check of the byte code, it doesn't even look like they would need the cast, but I'm not entirely sure on that.
As Mythic Mounts is closed source, I cannot send a patch request, so please report this bug to the authors.
For the time being, I can force-patch it out to stop the crashes.
With version 2.0, I worked around the crash.
Speaking of 2.0, it rewrote a lot, so let me know if anything in your big modpack fails. This rewrite did make it is easier for me to add support for other mods, so also feel free to open issues if you notice problems like the Arcanus wands again.