Hello, when i start server i get an error:

[minecraft/LevelStorageSource]: WorldGenSettings: No key preset in MapLike[{biomes:[{biome:"undergarden:forgotten_field",parameters:{continentalness:0.0f,depth:0.0f,erosion:0.0f,humidity:0.0f,offset:0.0f,temperature:0.0f,weirdness:0.0f}},{biome:"undergarden:ancient_sea",parameters:{continentalness:0.0f,depth:0.5299f,erosion:0.0f,humidity:0.0f,offset:0.0f,temperature:0.0f,weirdness:0.0f}},{biome:"undergarden:frostfields",parameters:{continentalness:-0.7f,depth:0.0f,erosion:0.0f,humidity:-0.7f,offset:0.0f,temperature:-0.7f,weirdness:0.0f}},{biome:"undergarden:icy_sea",parameters:{continentalness:-0.7f,depth:0.5299f,erosion:0.0f,humidity:-0.7f,offset:0.0f,temperature:-0.7f,weirdness:0.0f}},{biome:"undergarden:smogstem_forest",parameters:{continentalness:0.0f,depth:0.0f,erosion:0.0f,humidity:0.0f,offset:0.0f,temperature:0.4f,weirdness:0.0f}},{biome:"undergarden:ancient_sea",parameters:{continentalness:0.0f,depth:0.5299f,erosion:0.0f,humidity:0.0f,offset:0.0f,temperature:0.4f,weirdness:0.0f}},{biome:"undergarden:wigglewood_forest",parameters:{continentalness:0.0f,depth:0.0f,erosion:0.0f,humidity:0.4f,offset:0.0f,temperature:0.0f,weirdness:0.0f}},{biome:"undergarden:ancient_sea",parameters:{continentalness:0.0f,depth:0.5299f,erosion:0.0f,humidity:0.4f,offset:0.0f,temperature:0.0f,weirdness:0.0f}},{biome:"undergarden:dense_forest",parameters:{continentalness:0.0f,depth:0.0f,erosion:0.0f,humidity:0.4f,offset:0.0f,temperature:0.4f,weirdness:0.0f}},{biome:"undergarden:ancient_sea",parameters:{continentalness:0.0f,depth:0.5299f,erosion:0.0f,humidity:0.4f,offset:0.0f,temperature:0.4f,weirdness:0.0f}},{biome:"undergarden:gronglegrowth",parameters:{continentalness:0.4f,depth:0.0f,erosion:0.0f,humidity:0.4f,offset:0.0f,temperature:0.4f,weirdness:0.0f}},{biome:"undergarden:ancient_sea",parameters:{continentalness:0.4f,depth:0.5299f,erosion:0.0f,humidity:0.4f,offset:0.0f,temperature:0.4f,weirdness:0.0f}},{biome:"undergarden:barren_abyss",parameters:{continentalness:0.0f,depth:0.0f,erosion:0.0f,humidity:0.0f,offset:0.0f,temperature:0.0f,weirdness:0.5f}},{biome:"undergarden:dead_sea",parameters:{continentalness:0.0f,depth:0.5299f,erosion:0.0f,humidity:0.0f,offset:0.0f,temperature:0.0f,weirdness:0.5f}},{biome:"undergarden:smog_spires",parameters:{continentalness:0.0f,depth:0.0f,erosion:0.0f,humidity:0.0f,offset:0.0f,temperature:0.0f,weirdness:0.8f}},{biome:"undergarden:dead_sea",parameters:{continentalness:0.0f,depth:0.5299f,erosion:0.0f,humidity:0.0f,offset:0.0f,temperature:0.0f,weirdness:0.8f}},{biome:"undergarden:mushroom_bog",parameters:{continentalness:0.0f,depth:0.0f,erosion:0.0f,humidity:0.0f,offset:0.5f,temperature:0.0f,weirdness:-0.8f}},{biome:"undergarden:ancient_sea",parameters:{continentalness:0.0f,depth:0.5299f,erosion:0.0f,humidity:0.0f,offset:0.5f,temperature:0.0f,weirdness:-0.8f}}],type:"minecraft:multi_noise"}] missed input: {"undergarden:undergarden":{"forge:use_server_seed":1b,generator:{biome_source:{biomes:[{biome:"undergarden:forgotten_field",parameters:{continentalness:0.0f,depth:0.0f,erosion:0.0f,humidity:0.0f,offset:0.0f,temperature:0.0f,weirdness:0.0f}},{biome:"undergarden:ancient_sea",parameters:{continentalness:0.0f,depth:0.5299f,erosion:0.0f,humidity:0.0f,offset:0.0f,temperature:0.0f,weirdness:0.0f}},{biome:"undergarden:frostfields",parameters:{continentalness:-0.7f,depth:0.0f,erosion:0.0f,humidity:-0.7f,offset:0.0f,temperature:-0.7f,weirdness:0.0f}},{biome:"undergarden:icy_sea",parameters:{continentalness:-0.7f,depth:0.5299f,erosion:0.0f,humidity:-0.7f,offset:0.0f,temperature:-0.7f,weirdness:0.0f}},{biome:"undergarden:smogstem_forest",parameters:{continentalness:0.0f,depth:0.0f,erosion:0.0f,humidity:0.0f,offset:0.0f,temperature:0.4f,weirdness:0.0f}},{biome:"undergarden:ancient_sea",parameters:{continentalness:0.0f,depth:0.5299f,erosion:0.0f,humidity:0.0f,offset:0.0f,temperature:0.4f,weirdness:0.0f}},{biome:"undergarden:wigglewood_forest",parameters:{continentalness:0.0f,depth:0.0f,erosion:0.0f,humidity:0.4f,offset:0.0f,temperature:0.0f,weirdness:0.0f}},{biome:"undergarden:ancient_sea",parameters:{continentalness:0.0f,depth:0.5299f,erosion:0.0f,humidity:0.4f,offset:0.0f,temperature:0.0f,weirdness:0.0f}},{biome:"undergarden:dense_forest",parameters:{continentalness:0.0f,depth:0.0f,erosion:0.0f,humidity:0.4f,offset:0.0f,temperature:0.4f,weirdness:0.0f}},{biome:"undergarden:ancient_sea",parameters:{continentalness:0.0f,depth:0.5299f,erosion:0.0f,humidity:0.4f,offset:0.0f,temperature:0.4f,weirdness:0.0f}},{biome:"undergarden:gronglegrowth",parameters:{continentalness:0.4f,depth:0.0f,erosion:0.0f,humidity:0.4f,offset:0.0f,temperature:0.4f,weirdness:0.0f}},{biome:"undergarden:ancient_sea",parameters:{continentalness:0.4f,depth:0.5299f,erosion:0.0f,humidity:0.4f,offset:0.0f,temperature:0.4f,weirdness:0.0f}},{biome:"undergarden:barren_abyss",parameters:{continentalness:0.0f,depth:0.0f,erosion:0.0f,humidity:0.0f,offset:0.0f,temperature:0.0f,weirdness:0.5f}},{biome:"undergarden:dead_sea",parameters:{continentalness:0.0f,depth:0.5299f,erosion:0.0f,humidity:0.0f,offset:0.0f,temperature:0.0f,weirdness:0.5f}},{biome:"undergarden:smog_spires",parameters:{continentalness:0.0f,depth:0.0f,erosion:0.0f,humidity:0.0f,offset:0.0f,temperature:0.0f,weirdness:0.8f}},{biome:"undergarden:dead_sea",parameters:{continentalness:0.0f,depth:0.5299f,erosion:0.0f,humidity:0.0f,offset:0.0f,temperature:0.0f,weirdness:0.8f}},{biome:"undergarden:mushroom_bog",parameters:{continentalness:0.0f,depth:0.0f,erosion:0.0f,humidity:0.0f,offset:0.5f,temperature:0.0f,weirdness:-0.8f}},{biome:"undergarden:ancient_sea",parameters:{continentalness:0.0f,depth:0.5299f,erosion:0.0f,humidity:0.0f,offset:0.5f,temperature:0.0f,weirdness:-0.8f}}],type:"minecraft:multi_noise"},seed:5138480089295750730L,settings:"undergarden:undergarden",type:"minecraft:noise"},type:"undergarden:undergarden"}}

I have deleted Dimension folder from server, did not help

Please provide the whole log. I can't say we will be able to help. Things change a -lot- between versions on our end, and the mod likely isn't even remotely the same now.

This is likely the case.