[Bug] There was an error with NBT serialization

An error message appears every time a crate is used. The error message is for NBT serialization.

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## Error message
```
[20:19:53] [Server thread/WARN]: [CrateReloaded] There was an error with NBT serialization for [ItemStack{COOKED_CHICKEN x 32}]
```
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**Server version:** Paper-461
**Plugin version:** 2.3.8
