uno.rebellious.lavasponge.blocks.BlockRegister$1.getBurnTime(BlockRegister.java:30) ~[lavasponge-1.1.0-1.18.1.jar%23147!:1.1.0-1.18.1]

https://gist.github.com/nekoman09/5296f4ebce1cce4325525e0f9ad36a71

Thanks for raising.

Was there anything specific you were doing when this happened?

Fixed by 6c9c8aa