> [15:01:46 INFO]: [Machine] Disabling Machine v3.1.3-SNAPSHOT
> [15:01:46 INFO]: ----------
> [15:01:46 INFO]: Disabling Machine> Version: 3.1.3-SNAPSHOT!
> [15:01:46 ERROR]: Error occurred while disabling Machine v3.1.3-SNAPSHOT (Is it up to date?)
java.util.ConcurrentModificationException
at java.util.HashMap$HashIterator.nextNode(HashMap.java:1445) ~[?:1.8.0_212]
at java.util.HashMap$KeyIterator.next(HashMap.java:1469) ~[?:1.8.0_212]
at com.skydhs.machine.Core.updateMachineRewards(Core.java:234) ~[?:?]
at com.skydhs.machine.Core.updateTask(Core.java:199) ~[?:?]
at com.skydhs.machine.Core.onDisable(Core.java:168) ~[?:?]
at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:323) ~[server.jar:git-PaperSpigot-"4c7641d"]
at org.bukkit.plugin.java.JavaPluginLoader.disablePlugin(JavaPluginLoader.java:360) [server.jar:git-PaperSpigot-"4c7641d"]
at org.bukkit.plugin.SimplePluginManager.disablePlugin(SimplePluginManager.java:427) [server.jar:git-PaperSpigot-"4c7641d"]
at org.bukkit.plugin.SimplePluginManager.disablePlugins(SimplePluginManager.java:420) [server.jar:git-PaperSpigot-"4c7641d"]
at org.bukkit.craftbukkit.v1_8_R3.CraftServer.disablePlugins(CraftServer.java:338) [server.jar:git-PaperSpigot-"4c7641d"]
at net.minecraft.server.v1_8_R3.MinecraftServer.stop(MinecraftServer.java:456) [server.jar:git-PaperSpigot-"4c7641d"]
at net.minecraft.server.v1_8_R3.MinecraftServer.run(MinecraftServer.java:652) [server.jar:git-PaperSpigot-"4c7641d"]
at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]