[07:39:54 INFO]: [+] FOXADUCE
[07:39:57 INFO]: FOXADUCE issued server command: /nangcap
[07:39:57 ERROR]: null
org.bukkit.command.CommandException: Unhandled exception executing comman
cap' in plugin NangCap v1.0
        at org.bukkit.command.PluginCommand.execute(PluginCommand.java:46
got.jar:git-Spigot-dcd1643-e60fc34]
        at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.
1) ~[Spigot.jar:git-Spigot-dcd1643-e60fc34]
        at org.bukkit.craftbukkit.v1_12_R1.CraftServer.dispatchCommand(Cr
er.java:648) ~[Spigot.jar:git-Spigot-dcd1643-e60fc34]
        at net.minecraft.server.v1_12_R1.PlayerConnection.handleCommand(P
nnection.java:1399) [Spigot.jar:git-Spigot-dcd1643-e60fc34]
        at net.minecraft.server.v1_12_R1.PlayerConnection.a(PlayerConnect
a:1234) [Spigot.jar:git-Spigot-dcd1643-e60fc34]
        at net.minecraft.server.v1_12_R1.PacketPlayInChat.a(PacketPlayInC
a:45) [Spigot.jar:git-Spigot-dcd1643-e60fc34]
        at net.minecraft.server.v1_12_R1.PacketPlayInChat.a(PacketPlayInC
a:1) [Spigot.jar:git-Spigot-dcd1643-e60fc34]
        at net.minecraft.server.v1_12_R1.PlayerConnectionUtils$1.run(Sour
13) [Spigot.jar:git-Spigot-dcd1643-e60fc34]
        at java.util.concurrent.Executors$RunnableAdapter.call(Unknown So
?:1.8.0_221]
        at java.util.concurrent.FutureTask.run(Unknown Source) [?:1.8.0_2
        at net.minecraft.server.v1_12_R1.SystemUtils.a(SourceFile:46) [Sp
r:git-Spigot-dcd1643-e60fc34]
        at net.minecraft.server.v1_12_R1.MinecraftServer.D(MinecraftServe
748) [Spigot.jar:git-Spigot-dcd1643-e60fc34]
        at net.minecraft.server.v1_12_R1.DedicatedServer.D(DedicatedServe
406) [Spigot.jar:git-Spigot-dcd1643-e60fc34]
        at net.minecraft.server.v1_12_R1.MinecraftServer.C(MinecraftServe
679) [Spigot.jar:git-Spigot-dcd1643-e60fc34]
        at net.minecraft.server.v1_12_R1.MinecraftServer.run(MinecraftSer
a:577) [Spigot.jar:git-Spigot-dcd1643-e60fc34]
        at java.lang.Thread.run(Unknown Source) [?:1.8.0_221]
Caused by: java.lang.NumberFormatException: For input string: "28"
        at java.lang.NumberFormatException.forInputString(Unknown Source)
8.0_221]
        at java.lang.Integer.parseInt(Unknown Source) ~[?:1.8.0_221]
        at me.vidieuvuong.trihung.ft.Main.loadDecorate(Main.java:92) ~[?:
        at me.vidieuvuong.trihung.ft.Main.openGui(Main.java:84) ~[?:?]
        at me.vidieuvuong.trihung.ft.Main.onCommand(Main.java:75) ~[?:?]
        at org.bukkit.command.PluginCommand.execute(PluginCommand.java:44
got.jar:git-Spigot-dcd1643-e60fc34]
        ... 15 more