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java.lang.NullPointerException: 	at io.github.dre2n.dungeonsxl.listener.PlayerListener.onInteract(PlayerListener.java:147)	at sun.reflect.GeneratedMethodAccessor193.invoke(Unknown Source)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)	at java.lang.reflect.Method.invoke(Method.java:498)	at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:306)	at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62)	at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:502)	at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:487)	at org.bukkit.craftbukkit.v1_9_R1.event.CraftEventFactory.callPlayerInteractEvent(CraftEventFactory.java:231)	at org.bukkit.craftbukkit.v1_9_R1.event.CraftEventFactory.callPlayerInteractEvent(CraftEventFactory.java:198)	at net.minecraft.server.v1_9_R1.BlockPressurePlateBinary.e(BlockPressurePlateBinary.java:75)	at net.minecraft.server.v1_9_R1.BlockPressurePlateAbstract.a(BlockPressurePlateAbstract.java:94)	at net.minecraft.server.v1_9_R1.BlockPressurePlateAbstract.a(BlockPressurePlateAbstract.java:87)	at net.minecraft.server.v1_9_R1.Entity.checkBlockCollisions(Entity.java:839)	at net.minecraft.server.v1_9_R1.Entity.move(Entity.java:473)	at net.minecraft.server.v1_9_R1.EntityLiving.g(EntityLiving.java:1644)	at net.minecraft.server.v1_9_R1.EntityHuman.g(EntityHuman.java:1436)	at net.citizensnpcs.npc.entity.EntityHumanNPC.g(EntityHumanNPC.java:193)	at net.citizensnpcs.npc.entity.EntityHumanNPC.moveOnCurrentHeading(EntityHumanNPC.java:319)	at net.citizensnpcs.npc.entity.EntityHumanNPC.m(EntityHumanNPC.java:296)	at net.minecraft.server.v1_9_R1.World.entityJoinedWorld(World.java:1612)	at net.minecraft.server.v1_9_R1.World.g(World.java:1587)	at net.citizensnpcs.util.PlayerUpdateTask.run(PlayerUpdateTask.java:52)	at org.bukkit.craftbukkit.v1_9_R1.scheduler.CraftTask.run(CraftTask.java:71)	at org.bukkit.craftbukkit.v1_9_R1.scheduler.CraftScheduler.mainThreadHeartbeat(CraftScheduler.java:350)	at net.minecraft.server.v1_9_R1.MinecraftServer.D(MinecraftServer.java:729)	at net.minecraft.server.v1_9_R1.DedicatedServer.D(DedicatedServer.java:400)	at net.minecraft.server.v1_9_R1.MinecraftServer.C(MinecraftServer.java:660)	at net.minecraft.server.v1_9_R1.MinecraftServer.run(MinecraftServer.java:559)	at java.lang.Thread.run(Thread.java:745)