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java.lang.NullPointerException: 	at pl.betoncraft.betonquest.Journal.generateTexts(Journal.java:170)	at pl.betoncraft.betonquest.Journal.addToInv(Journal.java:267)	at pl.betoncraft.betonquest.Journal.update(Journal.java:333)	at pl.betoncraft.betonquest.events.JournalEvent.run(JournalEvent.java:65)	at pl.betoncraft.betonquest.api.QuestEvent.fire(QuestEvent.java:155)	at pl.betoncraft.betonquest.BetonQuest.event(BetonQuest.java:848)	at pl.betoncraft.betonquest.api.Objective.completeObjective(Objective.java:170)	at pl.betoncraft.betonquest.objectives.MobKillObjective.onMobKill(MobKillObjective.java:99)	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)	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 pl.betoncraft.betonquest.api.MobKillNotifier.addKill(MobKillNotifier.java:69)	at pl.betoncraft.betonquest.MobKillListener.onEntityDeath(MobKillListener.java:60)	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)	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.callEntityDeathEvent(CraftEventFactory.java:391)	at net.minecraft.server.v1_9_R1.EntityLiving.die(EntityLiving.java:982)	at net.minecraft.server.v1_9_R1.EntityZombie.die(EntityZombie.java:549)	at net.minecraft.server.v1_9_R1.EntityLiving.damageEntity(EntityLiving.java:899)	at net.minecraft.server.v1_9_R1.EntityMonster.damageEntity(EntityMonster.java:44)	at net.minecraft.server.v1_9_R1.EntityZombie.damageEntity(EntityZombie.java:179)	at net.minecraft.server.v1_9_R1.EntityHuman.attack(EntityHuman.java:999)	at net.minecraft.server.v1_9_R1.EntityPlayer.attack(EntityPlayer.java:1129)	at net.minecraft.server.v1_9_R1.PlayerConnection.a(PlayerConnection.java:1577)	at net.minecraft.server.v1_9_R1.PacketPlayInUseEntity.a(SourceFile:68)	at net.minecraft.server.v1_9_R1.PacketPlayInUseEntity.a(SourceFile:12)	at net.minecraft.server.v1_9_R1.PlayerConnectionUtils$1.run(SourceFile:13)	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)	at java.util.concurrent.FutureTask.run(FutureTask.java:266)	at net.minecraft.server.v1_9_R1.SystemUtils.a(SourceFile:45)	at net.minecraft.server.v1_9_R1.MinecraftServer.D(MinecraftServer.java:721)	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)