Describe the bug you're experiencing

When shift clicking into a furnace from Variant Furnaces the client will crash, and the server will show an error in console.
Error from server console, the crash on client says the same error.

Reproducability

Shift click any item into a furnace from variant furnaces.

Mod up to date

• Before submitting this issue I updated to the newest version and reproduced it

Minecraft version

1.20.1

Modloader version

Fabric

Logs

https://gist.github.com/BroBoss64/edaa4bfe4885eac42e6909e32d0c0757

Please report to Variant Furnaces, the recipe type should never be null