This mod is incompatible with:
Optifine
crash-2020-07-31_23.39.38-client.txt

And Carpet (https://www.curseforge.com/minecraft/mc-mods/carpet)
crash-2020-07-31_23.44.15-client.txt

Carpet issue has been fixed on their end, but is unfortunately not yet released.

OptiFine issue resolved in fce7708