[11:20:52 INFO] [Sponge]: Initializing Sponge...
[11:20:52 INFO] [Sponge]: De-obfuscation mappings are provided by MCP (http://www.modcoderpack.com)
[11:20:53 INFO] [Sponge]: Searching for plugins...
[11:20:53 INFO] [Sponge]: 0 plugin(s) found
[11:20:53 INFO] [mixin]: SpongePowered MIXIN Subsystem Version=0.5.5 Source=file:/C:/Users/pc01/Desktop/%ec%8a%a4%ed%8f%b0%ec%a7%80_%ed%94%84%eb%a6%ac%eb%a3%a8%ed%8a%b8_1.9_%eb%b2%84%ed%82%b7%20(1)/spongevanilla-1.9-5.0.0-BETA-17.jar Env=UNKNOWN
[11:20:53 INFO] [mixin]: Compatibility level set to JAVA_8
[11:20:53 INFO] [Sponge]: Initialization finished. Starting Minecraft server...
[11:20:56 WARN] [mixin]: Method overwrite conflict for getModDataId in mixins.common.entitycollisions.json:MixinEntity_Collisions, previously written by org.spongepowered.common.mixin.entityactivation.MixinEntity_Activation. Skipping method.
[11:20:56 WARN] [mixin]: Method overwrite conflict for setModDataId in mixins.common.entitycollisions.json:MixinEntity_Collisions, previously written by org.spongepowered.common.mixin.entityactivation.MixinEntity_Activation. Skipping method.
[11:20:56 WARN] [mixin]: Method overwrite conflict for requiresCacheRefresh in mixins.common.entitycollisions.json:MixinEntity_Collisions, previously written by org.spongepowered.common.mixin.entityactivation.MixinEntity_Activation. Skipping method.
[11:20:56 WARN] [mixin]: Method overwrite conflict for requiresCacheRefresh in mixins.common.entitycollisions.json:MixinEntity_Collisions, previously written by org.spongepowered.common.mixin.entityactivation.MixinEntity_Activation. Skipping method.
[11:20:59 INFO]: Starting minecraft server version 1.9
[11:20:59 INFO] [Sponge]: Loading Sponge...
[11:21:01 INFO] [Sponge]: Loading plugins...
[11:21:01 INFO] [Sponge]: Initializing plugins...
[11:21:01 INFO]: Loading properties
[11:21:01 INFO]: Default game type: SURVIVAL
[11:21:01 INFO]: Generating keypair
[11:21:01 INFO]: Starting Minecraft server on 25.12.51.69:25565
[11:21:01 INFO]: Using default channel type
[11:21:03 ERROR]: Conversion failed, please try again later
net.minecraft.server.management.PreYggdrasilConverter$ConversionError: Could not convert file for abdgsv
        at net.minecraft.server.management.PreYggdrasilConverter$6.func_152743_a(SourceFile:334) ~[ml$6.class:?]
        at net.minecraft.server.management.PreYggdrasilConverter$6.onProfileLookupSucceeded(SourceFile:315) ~[ml$6.class:?]
        at com.mojang.authlib.yggdrasil.YggdrasilGameProfileRepository.findProfilesByNames(YggdrasilGameProfileRepository.java:59) ~[YggdrasilGameProfileRepository.class:?]
        at net.minecraft.server.management.PreYggdrasilConverter.func_152717_a(SourceFile:61) ~[ml.class:?]
        at net.minecraft.server.management.PreYggdrasilConverter.func_152723_a(SourceFile:352) [ml.class:?]
        at net.minecraft.server.dedicated.DedicatedServer.func_152368_aE(SourceFile:586) [la.class:?]
        at net.minecraft.server.dedicated.DedicatedServer.func_71197_b(SourceFile:176) [la.class:?]
        at net.minecraft.server.MinecraftServer.run(SourceFile:427) [MinecraftServer.class:?]
        at java.lang.Thread.run(Unknown Source) [?:1.8.0_221]
[11:21:03 WARN]: Encountered a problem while converting the player save files, retrying in a few seconds
[11:21:08 ERROR]: Conversion failed, please try again later
net.minecraft.server.management.PreYggdrasilConverter$ConversionError: Could not convert file for abdgsv
        at net.minecraft.server.management.PreYggdrasilConverter$6.func_152743_a(SourceFile:334) ~[ml$6.class:?]
        at net.minecraft.server.management.PreYggdrasilConverter$6.onProfileLookupSucceeded(SourceFile:315) ~[ml$6.class:?]
        at com.mojang.authlib.yggdrasil.YggdrasilGameProfileRepository.findProfilesByNames(YggdrasilGameProfileRepository.java:59) ~[YggdrasilGameProfileRepository.class:?]
        at net.minecraft.server.management.PreYggdrasilConverter.func_152717_a(SourceFile:61) ~[ml.class:?]
        at net.minecraft.server.management.PreYggdrasilConverter.func_152723_a(SourceFile:352) [ml.class:?]
        at net.minecraft.server.dedicated.DedicatedServer.func_152368_aE(SourceFile:586) [la.class:?]
        at net.minecraft.server.dedicated.DedicatedServer.func_71197_b(SourceFile:176) [la.class:?]
        at net.minecraft.server.MinecraftServer.run(SourceFile:427) [MinecraftServer.class:?]
        at java.lang.Thread.run(Unknown Source) [?:1.8.0_221]
[11:21:08 WARN]: Encountered a problem while converting the player save files, retrying in a few seconds
[11:21:13 ERROR]: Conversion failed, please try again later
net.minecraft.server.management.PreYggdrasilConverter$ConversionError: Could not convert file for abdgsv
        at net.minecraft.server.management.PreYggdrasilConverter$6.func_152743_a(SourceFile:334) ~[ml$6.class:?]
        at net.minecraft.server.management.PreYggdrasilConverter$6.onProfileLookupSucceeded(SourceFile:315) ~[ml$6.class:?]
        at com.mojang.authlib.yggdrasil.YggdrasilGameProfileRepository.findProfilesByNames(YggdrasilGameProfileRepository.java:59) ~[YggdrasilGameProfileRepository.class:?]
        at net.minecraft.server.management.PreYggdrasilConverter.func_152717_a(SourceFile:61) ~[ml.class:?]
        at net.minecraft.server.management.PreYggdrasilConverter.func_152723_a(SourceFile:352) [ml.class:?]
        at net.minecraft.server.dedicated.DedicatedServer.func_152368_aE(SourceFile:586) [la.class:?]
        at net.minecraft.server.dedicated.DedicatedServer.func_71197_b(SourceFile:176) [la.class:?]
        at net.minecraft.server.MinecraftServer.run(SourceFile:427) [MinecraftServer.class:?]
        at java.lang.Thread.run(Unknown Source) [?:1.8.0_221]
[11:21:13 WARN]: **** DETECTED OLD PLAYER DIRECTORY IN THE WORLD SAVE
[11:21:13 WARN]: **** THIS USUALLY HAPPENS WHEN THE AUTOMATIC CONVERSION FAILED IN SOME WAY
[11:21:13 WARN]: ** please restart the server and if the problem persists, remove the directory 'world\players'
[11:21:13 INFO]: Stopping server