Cannot create Minecraft 1.18.2 flat world server

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OS Name/Version: Windows 11

Product Name/Version: AMP Release “Halimede”

v2.4.0.8, built 10/10/2022 21:18

Problem Description:

When attempting to create a 1.18.2 Forge server using a world type of “FLAT” and adding world generation arguments taken from a working SP world, the server fails to start.

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Steps to reproduce:

  • Set World Type to “FLAT”
  • add the following World Generator Settings: “minecraft:bedrock,63minecraft:deepslate,59minecraft:stone,3*minecraft:dirt,minecraft:grass_block;minecraft:dark_forest;village,mineshaft,stronghold,biome_1,dungeon,decoration,lake,lava_lake”
  • attempt to start server

Actions taken to resolve so far:

  • created default world generation without an issue
  • created “FLAT” world type without any generator settings without an issue
  • tried removing the biome type and server fails to run
  • created single player flat world with the generator settings above without an issue

Any help people can provide would be greatly appreciated.

server log is located at Server Log 5-11-22 -