Problem Cows don't drop leather in my custom modpack

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Cows drop meat and inferium essence but they don't drop leather. Other animals have no problem.
Minecraft Version: 1.12.2
Forge Version: 1.12.2 - 14.23.5.2838
MOD LIST: https://hastebin.com/igehuwazaq.md
SERVER LATEST LOG: https://drive.google.com/file/d/1TzspJj4benhLrLFtdUnZw64GXSDREJbJ/view?usp=sharing

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