JSON_Error

[11:52:07] [Protocol Worker #3 - WAddon - [recv: , send: PacketPlayOutEntityEquipment[4, legacy: 5], PacketPlayOutBed[10, legacy: 17], PacketPlayOutEntityEffect[29, legacy: 41], PacketPlayOutEntityMetadata[28, legacy: 40], PacketPlayOutAttachEntity[27, legacy: 39], PacketPlayOutUpdateAttributes[32, legacy: 44], PacketPlayOutNamedEntitySpawn[12, legacy: 20]]/ERROR]: [WAddon] Unhandled exception occured in onAsyncPacket() for WAddon
java.lang.RuntimeException: Cannot fetch profile for wiedzmin137
	at me.wiedzmin137.waddon.util.PlayerDisplayModifier.updateSkin(PlayerDisplayModifier.java:141) ~[WAddon.jar:?]
	at me.wiedzmin137.waddon.util.PlayerDisplayModifier.access$4(PlayerDisplayModifier.java:124) ~[WAddon.jar:?]
	at me.wiedzmin137.waddon.util.PlayerDisplayModifier$2.onPacketSending(PlayerDisplayModifier.java:100) ~[WAddon.jar:?]
	at com.comphenix.protocol.async.AsyncListenerHandler.processPacket(AsyncListenerHandler.java:641) [ProtocolLib.jar:?]
	at com.comphenix.protocol.async.AsyncListenerHandler.listenerLoop(AsyncListenerHandler.java:597) [ProtocolLib.jar:?]
	at com.comphenix.protocol.async.AsyncListenerHandler.access$200(AsyncListenerHandler.java:49) [ProtocolLib.jar:?]
	at com.comphenix.protocol.async.AsyncListenerHandler$2.run(AsyncListenerHandler.java:229) [ProtocolLib.jar:?]
	at com.comphenix.protocol.async.AsyncListenerHandler$3.run(AsyncListenerHandler.java:300) [ProtocolLib.jar:?]
	at org.bukkit.craftbukkit.v1_7_R4.scheduler.CraftTask.run(CraftTask.java:71) [spigot.jar:git-Spigot-1.7.9-R0.2-207-g03373bb]
	at org.bukkit.craftbukkit.v1_7_R4.scheduler.CraftAsyncTask.run(CraftAsyncTask.java:53) [spigot.jar:git-Spigot-1.7.9-R0.2-207-g03373bb]
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) [?:1.7.0_65]
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) [?:1.7.0_65]
	at java.lang.Thread.run(Thread.java:745) [?:1.7.0_65]
Caused by: org.json.simple.parser.ParseException
	at org.json.simple.parser.JSONParser.parse(JSONParser.java:257) ~[spigot.jar:git-Spigot-1.7.9-R0.2-207-g03373bb]
	at org.json.simple.parser.JSONParser.parse(JSONParser.java:81) ~[spigot.jar:git-Spigot-1.7.9-R0.2-207-g03373bb]
	at org.json.simple.parser.JSONParser.parse(JSONParser.java:75) ~[spigot.jar:git-Spigot-1.7.9-R0.2-207-g03373bb]
	at me.wiedzmin137.waddon.util.PlayerDisplayModifier.updateSkin(PlayerDisplayModifier.java:126) ~[WAddon.jar:?]
	... 12 more