[06:42:12 ERROR]: Could not call method 'public static org.bukkit.inventory.ItemStack org.bukkit.inventory.ItemStack.deserialize(java.util.Map)' of class org.bukkit.inventory.ItemStack for deserialization
 java.lang.NullPointerException: null
        at org.bukkit.inventory.ItemStack.<init>(ItemStack.java:91) ~[ItemStack.class:?]
        at org.bukkit.inventory.ItemStack.deserialize(ItemStack.java:167) ~[ItemStack.class:?]
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_282]
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_282]
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_282]
        at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_282]
        at org.bukkit.configuration.serialization.ConfigurationSerialization.deserializeViaMethod(ConfigurationSerialization.java:221) [ConfigurationSerialization.class:?]
        at org.bukkit.configuration.serialization.ConfigurationSerialization.deserialize(ConfigurationSerialization.java:261) [ConfigurationSerialization.class:?]
        at org.bukkit.configuration.serialization.ConfigurationSerialization.deserializeObject(ConfigurationSerialization.java:103) [ConfigurationSerialization.class:?]
        at org.bukkit.configuration.file.YamlConstructor$ConstructCustomObject.construct(YamlConstructor.java:33) [YamlConstructor$ConstructCustomObject.class:?]
        at org.yaml.snakeyaml.constructor.BaseConstructor.constructObjectNoCheck(BaseConstructor.java:207) [BaseConstructor.class:?]
        at org.yaml.snakeyaml.constructor.BaseConstructor.constructObject(BaseConstructor.java:196) [BaseConstructor.class:?]
        at org.yaml.snakeyaml.constructor.BaseConstructor.constructMapping2ndStep(BaseConstructor.java:462) [BaseConstructor.class:?]
        at org.yaml.snakeyaml.constructor.SafeConstructor.constructMapping2ndStep(SafeConstructor.java:183) [SafeConstructor.class:?]
        at org.yaml.snakeyaml.constructor.BaseConstructor.constructMapping(BaseConstructor.java:443) [BaseConstructor.class:?]
        at org.yaml.snakeyaml.constructor.SafeConstructor$ConstructYamlMap.construct(SafeConstructor.java:519) [SafeConstructor$ConstructYamlMap.class:?]
        at org.bukkit.configuration.file.YamlConstructor$ConstructCustomObject.construct(YamlConstructor.java:24) [YamlConstructor$ConstructCustomObject.class:?]
        at org.yaml.snakeyaml.constructor.BaseConstructor.constructObjectNoCheck(BaseConstructor.java:207) [BaseConstructor.class:?]
        at org.yaml.snakeyaml.constructor.BaseConstructor.constructObject(BaseConstructor.java:196) [BaseConstructor.class:?]
        at org.yaml.snakeyaml.constructor.BaseConstructor.constructMapping2ndStep(BaseConstructor.java:462) [BaseConstructor.class:?]
        at org.yaml.snakeyaml.constructor.SafeConstructor.constructMapping2ndStep(SafeConstructor.java:183) [SafeConstructor.class:?]
        at org.yaml.snakeyaml.constructor.BaseConstructor.constructMapping(BaseConstructor.java:443) [BaseConstructor.class:?]
        at org.yaml.snakeyaml.constructor.SafeConstructor$ConstructYamlMap.construct(SafeConstructor.java:519) [SafeConstructor$ConstructYamlMap.class:?]
        at org.bukkit.configuration.file.YamlConstructor$ConstructCustomObject.construct(YamlConstructor.java:24) [YamlConstructor$ConstructCustomObject.class:?]
        at org.yaml.snakeyaml.constructor.BaseConstructor.constructObjectNoCheck(BaseConstructor.java:207) [BaseConstructor.class:?]
        at org.yaml.snakeyaml.constructor.BaseConstructor.constructObject(BaseConstructor.java:196) [BaseConstructor.class:?]
        at org.yaml.snakeyaml.constructor.BaseConstructor.constructDocument(BaseConstructor.java:161) [BaseConstructor.class:?]
        at org.yaml.snakeyaml.constructor.BaseConstructor.getSingleData(BaseConstructor.java:147) [BaseConstructor.class:?]
        at org.yaml.snakeyaml.Yaml.loadFromReader(Yaml.java:524) [Yaml.class:?]
        at org.yaml.snakeyaml.Yaml.load(Yaml.java:437) [Yaml.class:?]
        at org.bukkit.configuration.file.YamlConfiguration.loadFromString(YamlConfiguration.java:104) [YamlConfiguration.class:?]
        at org.bukkit.configuration.file.FileConfiguration.load(FileConfiguration.java:157) [FileConfiguration.class:?]
        at org.bukkit.configuration.file.FileConfiguration.load(FileConfiguration.java:125) [FileConfiguration.class:?]
        at org.bukkit.configuration.file.YamlConfiguration.loadConfiguration(YamlConfiguration.java:48) [YamlConfiguration.class:?]
        at com.mc9y.pest.Pest.load(r:227) [Pest-1.4.4-RELEASE.jar:?]
        at com.mc9y.pest.Pest.onEnable(r:85) [Pest-1.4.4-RELEASE.jar:?]
        at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:177) [JavaPlugin.class:?]
        at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:318) [JavaPluginLoader.class:?]
        at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:399) [SimplePluginManager.class:?]
        at org.bukkit.craftbukkit.v1_12_R1.CraftServer.enablePlugin(CraftServer.java:477) [CraftServer.class:?]
        at org.bukkit.craftbukkit.v1_12_R1.CraftServer.enablePlugins(CraftServer.java:418) [CraftServer.class:?]
        at net.minecraft.server.MinecraftServer.func_71247_a(MinecraftServer.java:383) [MinecraftServer.class:?]
        at net.minecraft.server.dedicated.DedicatedServer.func_71197_b(DedicatedServer.java:315) [nz.class:?]
        at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:590) [MinecraftServer.class:?]
        at java.lang.Thread.run(Thread.java:748) [?:1.8.0_282]