Помогите ошибка в плагине AdvancedRandomTeleport

Я ваще не понимаю, что это за фигня. День с этим **усь. Хелпаните парни, плиз.

Вот лог:

[21:21:08] [Server thread/INFO]: lera issued server command: /rtp
[21:21:08] [Server thread/ERROR]: null
org.bukkit.command.CommandException: Unhandled exception executing command 'rtp' in plugin AdvancedRandomTeleport v1.01
at org.bukkit.command.PluginCommand.execute(PluginCommand.java:46) ~[Spigot.jar:git-Spigot-3fb9445-6e3cec8]
at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:141) ~[Spigot.jar:git-Spigot-3fb9445-6e3cec8]
at org.bukkit.craftbukkit.v1_11_R1.CraftServer.dispatchCommand(CraftServer.java:650) ~[Spigot.jar:git-Spigot-3fb9445-6e3cec8]
at net.minecraft.server.v1_11_R1.PlayerConnection.handleCommand(PlayerConnection.java:1354) [Spigot.jar:git-Spigot-3fb9445-6e3cec8]
at net.minecraft.server.v1_11_R1.PlayerConnection.a(PlayerConnection.java:1189) [Spigot.jar:git-Spigot-3fb9445-6e3cec8]
at net.minecraft.server.v1_11_R1.PacketPlayInChat.a(PacketPlayInChat.java:45) [Spigot.jar:git-Spigot-3fb9445-6e3cec8]
at net.minecraft.server.v1_11_R1.PacketPlayInChat.a(PacketPlayInChat.java:1) [Spigot.jar:git-Spigot-3fb9445-6e3cec8]
at net.minecraft.server.v1_11_R1.PlayerConnectionUtils$1.run(SourceFile:13) [Spigot.jar:git-Spigot-3fb9445-6e3cec8]
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [?:1.8.0_151]
at java.util.concurrent.FutureTask.run(FutureTask.java:266) [?:1.8.0_151]
at net.minecraft.server.v1_11_R1.SystemUtils.a(SourceFile:46) [Spigot.jar:git-Spigot-3fb9445-6e3cec8]
at net.minecraft.server.v1_11_R1.MinecraftServer.D(MinecraftServer.java:747) [Spigot.jar:git-Spigot-3fb9445-6e3cec8]
at net.minecraft.server.v1_11_R1.DedicatedServer.D(DedicatedServer.java:399) [Spigot.jar:git-Spigot-3fb9445-6e3cec8]
at net.minecraft.server.v1_11_R1.MinecraftServer.C(MinecraftServer.java:678) [Spigot.jar:git-Spigot-3fb9445-6e3cec8]
at net.minecraft.server.v1_11_R1.MinecraftServer.run(MinecraftServer.java:576) [Spigot.jar:git-Spigot-3fb9445-6e3cec8]
at java.lang.Thread.run(Thread.java:748) [?:1.8.0_151]
Caused by: java.lang.NullPointerException
at me.mrmaga.art.yml.MainConfig.getCooldownTime(MainConfig.java:55) ~[?:?]
at me.mrmaga.art.managers.CooldownManager.addCooldown(CooldownManager.java:20) ~[?:?]
at me.mrmaga.art.Commands.onCommand(Commands.java:77) ~[?:?]
at org.bukkit.command.PluginCommand.execute(PluginCommand.java:44) ~[Spigot.jar:git-Spigot-3fb9445-6e3cec8]
... 15 more