[21:22:16] [Server thread/INFO]: _InfinityMC issued server command: /backpack
[21:22:16] [Server thread/ERROR]: null
org.bukkit.command.CommandException: Unhandled exception executing command 'backpack' in plugin UltimateBackpacks v1.1.5
	at org.bukkit.command.PluginCommand.execute(PluginCommand.java:46) ~[skyblock.jar:git-Spigot-f950f8e-34b2c89]
	at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:141) ~[skyblock.jar:git-Spigot-f950f8e-34b2c89]
	at org.bukkit.craftbukkit.v1_11_R1.CraftServer.dispatchCommand(CraftServer.java:649) ~[skyblock.jar:git-Spigot-f950f8e-34b2c89]
	at net.minecraft.server.v1_11_R1.PlayerConnection.handleCommand(PlayerConnection.java:1335) [skyblock.jar:git-Spigot-f950f8e-34b2c89]
	at net.minecraft.server.v1_11_R1.PlayerConnection.a(PlayerConnection.java:1170) [skyblock.jar:git-Spigot-f950f8e-34b2c89]
	at net.minecraft.server.v1_11_R1.PacketPlayInChat.a(PacketPlayInChat.java:45) [skyblock.jar:git-Spigot-f950f8e-34b2c89]
	at net.minecraft.server.v1_11_R1.PacketPlayInChat.a(PacketPlayInChat.java:1) [skyblock.jar:git-Spigot-f950f8e-34b2c89]
	at net.minecraft.server.v1_11_R1.PlayerConnectionUtils$1.run(SourceFile:13) [skyblock.jar:git-Spigot-f950f8e-34b2c89]
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [?:1.8.0_101]
	at java.util.concurrent.FutureTask.run(FutureTask.java:266) [?:1.8.0_101]
	at net.minecraft.server.v1_11_R1.SystemUtils.a(SourceFile:46) [skyblock.jar:git-Spigot-f950f8e-34b2c89]
	at net.minecraft.server.v1_11_R1.MinecraftServer.D(MinecraftServer.java:739) [skyblock.jar:git-Spigot-f950f8e-34b2c89]
	at net.minecraft.server.v1_11_R1.DedicatedServer.D(DedicatedServer.java:399) [skyblock.jar:git-Spigot-f950f8e-34b2c89]
	at net.minecraft.server.v1_11_R1.MinecraftServer.C(MinecraftServer.java:675) [skyblock.jar:git-Spigot-f950f8e-34b2c89]
	at net.minecraft.server.v1_11_R1.MinecraftServer.run(MinecraftServer.java:574) [skyblock.jar:git-Spigot-f950f8e-34b2c89]
	at java.lang.Thread.run(Thread.java:745) [?:1.8.0_101]
Caused by: java.lang.NullPointerException
	at f.a.onCommand(Unknown Source) ~[?:?]
	at org.bukkit.command.PluginCommand.execute(PluginCommand.java:44) ~[skyblock.jar:git-Spigot-f950f8e-34b2c89]
	... 15 more
[21:22:40] [Server thread/INFO]: _InfinityMC issued server command: /backpacks
[21:22:42] [Server thread/INFO]: _InfinityMC issued server command: /backpack shop
[21:22:42] [Server thread/ERROR]: null
org.bukkit.command.CommandException: Unhandled exception executing command 'backpack' in plugin UltimateBackpacks v1.1.5
	at org.bukkit.command.PluginCommand.execute(PluginCommand.java:46) ~[skyblock.jar:git-Spigot-f950f8e-34b2c89]
	at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:141) ~[skyblock.jar:git-Spigot-f950f8e-34b2c89]
	at org.bukkit.craftbukkit.v1_11_R1.CraftServer.dispatchCommand(CraftServer.java:649) ~[skyblock.jar:git-Spigot-f950f8e-34b2c89]
	at net.minecraft.server.v1_11_R1.PlayerConnection.handleCommand(PlayerConnection.java:1335) [skyblock.jar:git-Spigot-f950f8e-34b2c89]
	at net.minecraft.server.v1_11_R1.PlayerConnection.a(PlayerConnection.java:1170) [skyblock.jar:git-Spigot-f950f8e-34b2c89]
	at net.minecraft.server.v1_11_R1.PacketPlayInChat.a(PacketPlayInChat.java:45) [skyblock.jar:git-Spigot-f950f8e-34b2c89]
	at net.minecraft.server.v1_11_R1.PacketPlayInChat.a(PacketPlayInChat.java:1) [skyblock.jar:git-Spigot-f950f8e-34b2c89]
	at net.minecraft.server.v1_11_R1.PlayerConnectionUtils$1.run(SourceFile:13) [skyblock.jar:git-Spigot-f950f8e-34b2c89]
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [?:1.8.0_101]
	at java.util.concurrent.FutureTask.run(FutureTask.java:266) [?:1.8.0_101]
	at net.minecraft.server.v1_11_R1.SystemUtils.a(SourceFile:46) [skyblock.jar:git-Spigot-f950f8e-34b2c89]
	at net.minecraft.server.v1_11_R1.MinecraftServer.D(MinecraftServer.java:739) [skyblock.jar:git-Spigot-f950f8e-34b2c89]
	at net.minecraft.server.v1_11_R1.DedicatedServer.D(DedicatedServer.java:399) [skyblock.jar:git-Spigot-f950f8e-34b2c89]
	at net.minecraft.server.v1_11_R1.MinecraftServer.C(MinecraftServer.java:675) [skyblock.jar:git-Spigot-f950f8e-34b2c89]
	at net.minecraft.server.v1_11_R1.MinecraftServer.run(MinecraftServer.java:574) [skyblock.jar:git-Spigot-f950f8e-34b2c89]
	at java.lang.Thread.run(Thread.java:745) [?:1.8.0_101]
Caused by: java.lang.NullPointerException
	at f.a.onCommand(Unknown Source) ~[?:?]
	at org.bukkit.command.PluginCommand.execute(PluginCommand.java:44) ~[skyblock.jar:git-Spigot-f950f8e-34b2c89]
	... 15 more