Server crash while generating the world.

[Aenye]

http://hastebin.com/ucemezemat.avrasm

[scabbed]

did you add custom biome or not ?

[Aenye]

Yes, this is first custom biome: http://hastebin.com/tinexemohu.cpp and this is second: http://hastebin.com/ixatakuqug.cpp

[scabbed]

"type": "AIR",

most of the time its because you add a block that is not recognised by spigot

check the correct name here : https://hub.spigotmc.org/javadocs/spigot/org/bukkit/Material.html