firsterror

[19:18:29] [Server thread/WARN]: Failed to save player data for PiousHeretic
[19:18:29] [Server thread/ERROR]: Couldn't save stats
java.io.IOException: No space left on device
	at java.io.FileOutputStream.writeBytes(Native Method) ~[?:1.8.0_91]
	at java.io.FileOutputStream.write(FileOutputStream.java:313) ~[?:1.8.0_91]
	at org.apache.commons.io.IOUtils.write(IOUtils.java:1527) ~[IOUtils.class:?]
	at org.apache.commons.io.FileUtils.writeStringToFile(FileUtils.java:1929) ~[FileUtils.class:?]
	at org.apache.commons.io.FileUtils.writeStringToFile(FileUtils.java:1962) ~[FileUtils.class:?]
	at net.minecraft.stats.StatisticsFile.func_150883_b(SourceFile:51) [pg.class:?]
	at net.minecraft.server.management.ServerConfigurationManager.func_72391_b(ServerConfigurationManager.java:291) [oi.class:?]
	at net.minecraft.server.management.ServerConfigurationManager.func_72389_g(ServerConfigurationManager.java:899) [oi.class:?]
	at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:568) [MinecraftServer.class:?]
	at fastcraft.at.a(F:978) [fastcraft-1.23.jar:?]
	at fastcraft.H.aq(F:36) [fastcraft-1.23.jar:?]
	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:396) [MinecraftServer.class:?]
	at net.minecraft.server.MinecraftServer$2.run(MinecraftServer.java:685) [li.class:?]
[19:18:29] [Server thread/WARN]: Failed to save player data for DaffyRoth
[19:18:29] [Server thread/ERROR]: Couldn't save stats
java.io.IOException: No space left on device
	at java.io.FileOutputStream.writeBytes(Native Method) ~[?:1.8.0_91]
	at java.io.FileOutputStream.write(FileOutputStream.java:313) ~[?:1.8.0_91]
	at org.apache.commons.io.IOUtils.write(IOUtils.java:1527) ~[IOUtils.class:?]
	at org.apache.commons.io.FileUtils.writeStringToFile(FileUtils.java:1929) ~[FileUtils.class:?]
	at org.apache.commons.io.FileUtils.writeStringToFile(FileUtils.java:1962) ~[FileUtils.class:?]
	at net.minecraft.stats.StatisticsFile.func_150883_b(SourceFile:51) [pg.class:?]
	at net.minecraft.server.management.ServerConfigurationManager.func_72391_b(ServerConfigurationManager.java:291) [oi.class:?]
	at net.minecraft.server.management.ServerConfigurationManager.func_72389_g(ServerConfigurationManager.java:899) [oi.class:?]
	at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:568) [MinecraftServer.class:?]
	at fastcraft.at.a(F:978) [fastcraft-1.23.jar:?]
	at fastcraft.H.aq(F:36) [fastcraft-1.23.jar:?]
	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:396) [MinecraftServer.class:?]
	at net.minecraft.server.MinecraftServer$2.run(MinecraftServer.java:685) [li.class:?]
[19:18:29] [Server thread/ERROR]: Encountered an unexpected exception
java.lang.RuntimeException: java.io.IOException: No space left on device
	at com.google.common.base.Throwables.propagate(Throwables.java:160) ~[guava-17.0.jar:?]
	at cpw.mods.fml.common.eventhandler.EventBus.post(EventBus.java:146) ~[EventBus.class:?]
	at net.minecraft.world.WorldServer.func_73044_a(WorldServer.java:810) ~[mt.class:?]
	at net.minecraft.server.MinecraftServer.func_71267_a(MinecraftServer.java:318) ~[MinecraftServer.class:?]
	at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:569) ~[MinecraftServer.class:?]
	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:396) [MinecraftServer.class:?]
	at net.minecraft.server.MinecraftServer$2.run(MinecraftServer.java:685) [li.class:?]
Caused by: java.io.IOException: No space left on device
	at java.io.FileOutputStream.writeBytes(Native Method) ~[?:1.8.0_91]
	at java.io.FileOutputStream.write(FileOutputStream.java:326) ~[?:1.8.0_91]
	at java.io.DataOutputStream.write(DataOutputStream.java:107) ~[?:1.8.0_91]
	at java.io.FilterOutputStream.write(FilterOutputStream.java:97) ~[?:1.8.0_91]
	at java.util.zip.GZIPOutputStream.writeHeader(GZIPOutputStream.java:182) ~[?:1.8.0_91]
	at java.util.zip.GZIPOutputStream.<init>(GZ