does not work with water erosion mod fabric and the error code is java.lang.UnsupportedOperationException: 'Block{minecraft:cobblestone}' property 'weathering' is not available on 'Block{minecraft:mossy_cobblestone}'java.lang.UnsupportedOperationException: 'Block{minecraft:cobblestone}' property 'weathering' is not available on 'Block{minecraft:mossy_cobblestone}'

I also am on 1.20.1 so i would prefer the fix on that version if you only can do it on one version for now

Yea having both mods would be cool. Also on 1.20.1

the reason I have found for it to not work I believe is that both mods change cobblestone to be mossy cobblestone and that creates a conflict.