[13:28:12 INFO]: -------- World Settings For [Lobby] --------
[13:28:12 WARN]: Unable to find spawn biome
[13:28:13 ERROR]: Encountered an unexpected exception
net.minecraft.server.v1_7_R4.ReportedException: Exception generating new chunk
        at net.minecraft.server.v1_7_R4.World.<init>(World.java:174) ~[Chika.jar:1.7.10-R0.1-SNAPSHOT]
        at net.minecraft.server.v1_7_R4.WorldServer.<init>(WorldServer.java:42) ~[Chika.jar:1.7.10-R0.1-SNAPSHOT]
        at net.minecraft.server.v1_7_R4.MinecraftServer.a(MinecraftServer.java:344) ~[Chika.jar:1.7.10-R0.1-SNAPSHOT]
        at net.minecraft.server.v1_7_R4.DedicatedServer.init(DedicatedServer.java:229) ~[Chika.jar:1.7.10-R0.1-SNAPSHOT]
        at net.minecraft.server.v1_7_R4.MinecraftServer.run(MinecraftServer.java:666) [Chika.jar:1.7.10-R0.1-SNAPSHOT]
        at net.minecraft.server.v1_7_R4.ThreadServerApplication.run(SourceFile:628) [Chika.jar:1.7.10-R0.1-SNAPSHOT]
Caused by: java.lang.NullPointerException
        at net.minecraft.server.v1_7_R4.ChunkProviderGenerate.a(ChunkProviderGenerate.java:203) ~[Chika.jar:1.7.10-R0.1-SNAPSHOT]
        at net.minecraft.server.v1_7_R4.ChunkProviderGenerate.a(ChunkProviderGenerate.java:63) ~[Chika.jar:1.7.10-R0.1-SNAPSHOT]
        at net.minecraft.server.v1_7_R4.ChunkProviderGenerate.getOrCreateChunk(ChunkProviderGenerate.java:149) ~[Chika.jar:1.7.10-R0.1-SNAPSHOT]
        at org.bukkit.craftbukkit.v1_7_R4.generator.NormalChunkGenerator.getOrCreateChunk(NormalChunkGenerator.java:35) ~[Chika.jar:1.7.10-R0.1-SNAPSHOT]
        at net.minecraft.server.v1_7_R4.ChunkProviderServer.originalGetChunkAt(ChunkProviderServer.java:177) ~[Chika.jar:1.7.10-R0.1-SNAPSHOT]
        at net.minecraft.server.v1_7_R4.ChunkProviderServer.getChunkAt(ChunkProviderServer.java:153) ~[Chika.jar:1.7.10-R0.1-SNAPSHOT]
        at net.minecraft.server.v1_7_R4.ChunkProviderServer.getChunkAt(ChunkProviderServer.java:132) ~[Chika.jar:1.7.10-R0.1-SNAPSHOT]
        at net.minecraft.server.v1_7_R4.ChunkProviderServer.getOrCreateChunk(ChunkProviderServer.java:231) ~[Chika.jar:1.7.10-R0.1-SNAPSHOT]
        at net.minecraft.server.v1_7_R4.World.getChunkAt(World.java:381) ~[Chika.jar:1.7.10-R0.1-SNAPSHOT]
        at net.minecraft.server.v1_7_R4.World.getType(World.java:324) ~[Chika.jar:1.7.10-R0.1-SNAPSHOT]
        at net.minecraft.server.v1_7_R4.World.getType(World.java:304) ~[Chika.jar:1.7.10-R0.1-SNAPSHOT]
        at net.minecraft.server.v1_7_R4.World.isEmpty(World.java:340) ~[Chika.jar:1.7.10-R0.1-SNAPSHOT]
        at net.minecraft.server.v1_7_R4.World.b(World.java:296) ~[Chika.jar:1.7.10-R0.1-SNAPSHOT]
        at net.minecraft.server.v1_7_R4.WorldProvider.canSpawn(SourceFile:62) ~[Chika.jar:1.7.10-R0.1-SNAPSHOT]
        at net.minecraft.serverThis Chika build only supports Minecraft 1.7.x and 1.8.x clients!
*** It is imperative that backups be taken before running this build on your server! ***
Please report issues directly to Paper, and always ensure you're up-to-date!
*** Any bug reports not running the very latest version of the software will be ignored ***