[15:40:08] [Craft Scheduler Thread - 6/WARN]: Exception in thread "Craft Scheduler Thread - 6"
[15:40:08] [Craft Scheduler Thread - 6/WARN]: org.apache.commons.lang.UnhandledException: Plugin ZeelenSchowek v1.0 generated an exception while executing task 16010
	at org.bukkit.craftbukkit.v1_8_R3.scheduler.CraftAsyncTask.run(CraftAsyncTask.java:56)
	at org.github.paperspigot.ServerSchedulerReportingWrapper.run(ServerSchedulerReportingWrapper.java:23)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	at java.lang.Thread.run(Thread.java:748)
Caused by: java.lang.NullPointerException: Nodes must be provided.
	at org.yaml.snakeyaml.nodes.NodeTuple.<init>(NodeTuple.java:28)
	at org.yaml.snakeyaml.representer.BaseRepresenter.representMapping(BaseRepresenter.java:163)
	at org.yaml.snakeyaml.representer.SafeRepresenter$RepresentMap.representData(SafeRepresenter.java:304)
	at org.bukkit.configuration.file.YamlRepresenter$RepresentConfigurationSection.representData(YamlRepresenter.java:23)
	at org.yaml.snakeyaml.representer.BaseRepresenter.representData(BaseRepresenter.java:94)
	at org.yaml.snakeyaml.representer.BaseRepresenter.representMapping(BaseRepresenter.java:156)
	at org.yaml.snakeyaml.representer.SafeRepresenter$RepresentMap.representData(SafeRepresenter.java:304)
	at org.yaml.snakeyaml.representer.BaseRepresenter.representData(BaseRepresenter.java:94)
	at org.yaml.snakeyaml.representer.BaseRepresenter.represent(BaseRepresenter.java:64)
	at org.yaml.snakeyaml.Yaml.dumpAll(Yaml.java:242)
	at org.yaml.snakeyaml.Yaml.dumpAll(Yaml.java:206)
	at org.yaml.snakeyaml.Yaml.dump(Yaml.java:181)
	at org.bukkit.configuration.file.YamlConfiguration.saveToString(YamlConfiguration.java:40)
	at org.bukkit.configuration.file.FileConfiguration.save(FileConfiguration.java:103)
	at org.bukkit.plugin.java.JavaPlugin.saveConfig(JavaPlugin.java:230)
	at me.zeelen.schowek.utils.SchowekUtil.addToKOXY(SchowekUtil.java:14)
	at me.zeelen.schowek.utils.InventoryUtil.checkInventory(InventoryUtil.java:14)
	at me.zeelen.schowek.listeners.InventoryCloseListener.lambda$handle$0(InventoryCloseListener.java:18)
	at org.bukkit.craftbukkit.v1_8_R3.scheduler.CraftTask.run(CraftTask.java:59)
	at org.bukkit.craftbukkit.v1_8_R3.scheduler.CraftAsyncTask.run(CraftAsyncTask.java:53)
	... 4 more