warningServer ErrorsAffects: All versions
How to Fix Invalid World Type
Fix Invalid World Type by setting a valid level-type in server.properties.
Quick Fix
Set level-type=minecraft\:normal in server.properties.
Error Message
Unknown world type: XXXXHow to Fix
1
Set level-type=minecraft\:normal in server.properties
2
Other valid types: minecraft\:flat, minecraft\:large_biomes, minecraft\:amplified
3
If using a modded world type, ensure the mod is installed
Common Causes
- Invalid level-type in server.properties
- World type from a mod that is no longer installed
- Typo in the level-type setting
Diagnostic Steps
- Open server.properties
- Check the level-type value
- Set to a valid type
- Restart the server
FAQ
What world types are available?
Vanilla types: normal, flat, large_biomes, amplified, single_biome_surface. Mods can add custom types.