Three nether biomes are broken. These biomes are:

Soul Sand Valley
Crimson Forest
Warped Forest

There are no soul sand blocks and no soul soil in Soul Sand Valley. Crimson Wart, Crimson Stem and Crimson Nylium trees cannot be generated in Crimson Forest. Warped Wart, Crimson Stem and Warped Nylium trees cannot be generated in Warped Forest

I am attaching three screenshots of broken biomes

This error has been around for four snapshots

21w37a
21w38a
21w39a
21w40a