[03:50:38] [Server thread/WARN]: java.io.NotSerializableException: org.bukkit.Location
[03:50:38] [Server thread/WARN]:        at java.io.ObjectOutputStream.writeObject0(Unknown Source)
[03:50:38] [Server thread/WARN]:        at java.io.ObjectOutputStream.writeObject(Unknown Source)
[03:50:38] [Server thread/WARN]:        at java.util.HashMap.internalWriteEntries(Unknown Source)
[03:50:38] [Server thread/WARN]:        at java.util.HashMap.writeObject(Unknown Source)
[03:50:38] [Server thread/WARN]:        at sun.reflect.GeneratedMethodAccessor51.invoke(Unknown Source)
[03:50:38] [Server thread/WARN]:        at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
[03:50:38] [Server thread/WARN]:        at java.lang.reflect.Method.invoke(Unknown Source)
[03:50:38] [Server thread/WARN]:        at java.io.ObjectStreamClass.invokeWriteObject(Unknown Source)
[03:50:38] [Server thread/WARN]:        at java.io.ObjectOutputStream.writeSerialData(Unknown Source)
[03:50:38] [Server thread/WARN]:        at java.io.ObjectOutputStream.writeOrdinaryObject(Unknown Source)
[03:50:38] [Server thread/WARN]:        at java.io.ObjectOutputStream.writeObject0(Unknown Source)
[03:50:38] [Server thread/WARN]:        at java.io.ObjectOutputStream.writeObject(Unknown Source)
[03:50:38] [Server thread/WARN]:        at me.titus.serialiser.Serializer.writeToFile(Serializer.java:15)
[03:50:38] [Server thread/WARN]:        at me.titus.ChestSell.onDisable(ChestSell.java:55)
[03:50:38] [Server thread/WARN]:        at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:265)
[03:50:38] [Server thread/WARN]:        at org.bukkit.plugin.java.JavaPluginLoader.disablePlugin(JavaPluginLoader.java:376)
[03:50:38] [Server thread/WARN]:        at org.bukkit.plugin.SimplePluginManager.disablePlugin(SimplePluginManager.java:501)
[03:50:38] [Server thread/WARN]:        at org.bukkit.plugin.SimplePluginManager.disablePlugins(SimplePluginManager.java:493)
[03:50:38] [Server thread/WARN]:        at org.bukkit.plugin.SimplePluginManager.clearPlugins(SimplePluginManager.java:544)
[03:50:38] [Server thread/WARN]:        at org.bukkit.craftbukkit.v1_15_R1.CraftServer.reload(CraftServer.java:801)
[03:50:38] [Server thread/WARN]:        at org.bukkit.Bukkit.reload(Bukkit.java:620)
[03:50:38] [Server thread/WARN]:        at org.bukkit.command.defaults.ReloadCommand.execute(ReloadCommand.java:27)
[03:50:38] [Server thread/WARN]:        at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:149)
[03:50:38] [Server thread/WARN]:        at org.bukkit.craftbukkit.v1_15_R1.CraftServer.dispatchCommand(CraftServer.java:723)
[03:50:38] [Server thread/WARN]:        at org.bukkit.craftbukkit.v1_15_R1.CraftServer.dispatchServerCommand(CraftServer.java:708)
[03:50:38] [Server thread/WARN]:        at net.minecraft.server.v1_15_R1.DedicatedServer.handleCommandQueue(DedicatedServer.java:443)
[03:50:38] [Server thread/WARN]:        at net.minecraft.server.v1_15_R1.DedicatedServer.b(DedicatedServer.java:407)
[03:50:38] [Server thread/WARN]:        at net.minecraft.server.v1_15_R1.MinecraftServer.a(MinecraftServer.java:984)
[03:50:38] [Server thread/WARN]:        at net.minecraft.server.v1_15_R1.MinecraftServer.run(MinecraftServer.java:824)
[03:50:38] [Server thread/WARN]:        at java.lang.Thread.run(Unknown Source)