Hello !

Sorry for not bringing much additional information besides the crash report.
I am not sure how to interpret this error, nothing is obvious to me in this crash log.
https://crashy.net/w1bQp3fbAOzqhKY3BgGu?raw

The most obvious culprit would have been Blur in my opinion, sadly, disabling it did not change the outcome.
https://crashy.net/YKAQ3g8YmsswC6n8k9CF?raw

If you need further information, I will happily oblige.
Running on W10, MC1.18.1, Fabric 0.12.12

Should be fixed in v0.1.1

Thanks for the report!

Not sure what would cause this but it should be easy enough to fix.
I just need to change this assertion to a graceful check (not sure why I didn't do that in the first place)

I was writting a bug report for Krypton as well when writing this, and mislabled the title. Thanks for taking note of this issue!