[15:32:29 INFO]: xXAmyLouiseXx[/86.155.80.147:1025] logged in with entity id 124
6 at ([Spawn]51.30633151727765, 16.0, 173.7748611056062)
[15:32:30 INFO]: [Autorank] Config files have been correctly setup!
[15:33:10 INFO]: xXAmyLouiseXx issued server command: /shopkeeper
[15:34:20 WARN]: Exception in thread "Craft Scheduler Thread - 8"
[15:34:20 WARN]: org.apache.commons.lang.UnhandledException: Plugin Shopkeepers
v1.60 generated an exception while executing task 589
        at org.bukkit.craftbukkit.v1_8_R3.scheduler.CraftAsyncTask.run(CraftAsyn
cTask.java:56)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
        at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.NullPointerException: null key in entry: null=0
        at com.google.common.collect.CollectPreconditions.checkEntryNotNull(Coll
ectPreconditions.java:31)
        at com.google.common.collect.ImmutableMap.entryOf(ImmutableMap.java:135)

        at com.google.common.collect.ImmutableMap$Builder.put(ImmutableMap.java:
206)
        at org.bukkit.craftbukkit.v1_8_R3.inventory.CraftMetaItem.serializeEncha
ntments(CraftMetaItem.java:915)
        at org.bukkit.craftbukkit.v1_8_R3.inventory.CraftMetaItem.serialize(Craf
tMetaItem.java:864)
        at org.bukkit.craftbukkit.v1_8_R3.inventory.CraftMetaItem.serialize(Craf
tMetaItem.java:850)
        at org.bukkit.configuration.file.YamlRepresenter$RepresentConfigurationS
erializable.representData(YamlRepresenter.java:33)
        at org.yaml.snakeyaml.representer.BaseRepresenter.representData(BaseRepr
esenter.java:94)
        at org.yaml.snakeyaml.representer.BaseRepresenter.representMapping(BaseR
epresenter.java:156)
        at org.yaml.snakeyaml.representer.SafeRepresenter$RepresentMap.represent
Data(SafeRepresenter.java:304)
        at org.bukkit.configuration.file.YamlRepresenter$RepresentConfigurationS
erializable.representData(YamlRepresenter.java:35)
        at org.yaml.snakeyaml.representer.BaseRepresenter.representData(BaseRepr
esenter.java:94)
        at org.yaml.snakeyaml.representer.BaseRepresenter.representMapping(BaseR
epresenter.java:156)
        at org.yaml.snakeyaml.representer.SafeRepresenter$RepresentMap.represent
Data(SafeRepresenter.java:304)
        at org.bukkit.configuration.file.YamlRepresenter$RepresentConfigurationS
ection.representData(YamlRepresenter.java:23)
        at org.yaml.snakeyaml.representer.BaseRepresenter.representData(BaseRepr
esenter.java:94)
        at org.yaml.snakeyaml.representer.BaseRepresenter.representMapping(BaseR
epresenter.java:156)
        at org.yaml.snakeyaml.representer.SafeRepresenter$RepresentMap.represent
Data(SafeRepresenter.java:304)
        at org.bukkit.configuration.file.YamlRepresenter$RepresentConfigurationS
ection.representData(YamlRepresenter.java:23)
        at org.yaml.snakeyaml.representer.BaseRepresenter.representData(BaseRepr
esenter.java:94)
        at org.yaml.snakeyaml.representer.BaseRepresenter.representMapping(BaseR
epresenter.java:156)
        at org.yaml.snakeyaml.representer.SafeRepresenter$RepresentMap.represent
Data(SafeRepresenter.java:304)
        at org.bukkit.configuration.file.YamlRepresenter$RepresentConfigurationS
ection.representData(YamlRepresenter.java:23)
        at org.yaml.snakeyaml.representer.BaseRepresenter.representData(BaseRepr
esenter.java:94)
        at org.yaml.snakeyaml.representer.BaseRepresenter.representMapping(BaseR
epresenter.java:156)
        at org.yaml.snakeyaml.representer.SafeRepresenter$RepresentMap.represent
Data(SafeRepresenter.java:304)
        at org.yaml.snakeyaml.representer.BaseRepresenter.representData(BaseRepr
esenter.java:94)
        at org.yaml.snakeyaml.representer.BaseRepresenter.represent(BaseRepresen
ter.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(YamlConf
iguration.java:40)
        at com.nisovin.shopkeepers.ShopkeepersPlugin.saveDataToFile(ShopkeepersP
lugin.java:1279)
        at com.nisovin.shopkeepers.ShopkeepersPlugin.access$1000(ShopkeepersPlug
in.java:56)
        at com.nisovin.shopkeepers.ShopkeepersPlugin$11.run(ShopkeepersPlugin.ja
va:1238)
        at org.bukkit.craftbukkit.v1_8_R3.scheduler.CraftTask.run(CraftTask.java
:71)
        at org.bukkit.craftbukkit.v1_8_R3.scheduler.CraftAsyncTask.run(CraftAsyn
cTask.java:53)
        ... 3 more

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