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org.bukkit.event.EventException at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:310)[spigot-1.9.4.jar:git-Spigot-c6871e2-0cd0397] at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62)[spigot-1.9.4.jar:git-Spigot-c6871e2-0cd0397] at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:502)[spigot-1.9.4.jar:git-Spigot-c6871e2-0cd0397] at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:487)[spigot-1.9.4.jar:git-Spigot-c6871e2-0cd0397] at net.minecraft.server.v1_9_R2.PlayerConnection.a(PlayerConnection.java:1851)[spigot-1.9.4.jar:git-Spigot-c6871e2-0cd0397] at net.minecraft.server.v1_9_R2.PacketPlayInWindowClick.a(SourceFile:33)[spigot-1.9.4.jar:git-Spigot-c6871e2-0cd0397] at net.minecraft.server.v1_9_R2.PacketPlayInWindowClick.a(SourceFile:10)[spigot-1.9.4.jar:git-Spigot-c6871e2-0cd0397] at net.minecraft.server.v1_9_R2.PlayerConnectionUtils$1.run(SourceFile:13)[spigot-1.9.4.jar:git-Spigot-c6871e2-0cd0397] at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)[?:1.8.0_72] at java.util.concurrent.FutureTask.run(FutureTask.java:266)[?:1.8.0_72] at net.minecraft.server.v1_9_R2.SystemUtils.a(SourceFile:45)[spigot-1.9.4.jar:git-Spigot-c6871e2-0cd0397] at net.minecraft.server.v1_9_R2.MinecraftServer.D(MinecraftServer.java:726)[spigot-1.9.4.jar:git-Spigot-c6871e2-0cd0397] at net.minecraft.server.v1_9_R2.DedicatedServer.D(DedicatedServer.java:399)[spigot-1.9.4.jar:git-Spigot-c6871e2-0cd0397] at net.minecraft.server.v1_9_R2.MinecraftServer.C(MinecraftServer.java:665)[spigot-1.9.4.jar:git-Spigot-c6871e2-0cd0397] at net.minecraft.server.v1_9_R2.MinecraftServer.run(MinecraftServer.java:564)[spigot-1.9.4.jar:git-Spigot-c6871e2-0cd0397] at java.lang.Thread.run(Thread.java:745)[?:1.8.0_72]Caused by: java.lang.NullPointerException at pl.betoncraft.betonquest.Journal.generateTexts(Journal.java:183)[?:?] at pl.betoncraft.betonquest.Journal.addToInv(Journal.java:291)[?:?] at pl.betoncraft.betonquest.Backpack$Page.click(Backpack.java:278)[?:?] at pl.betoncraft.betonquest.Backpack.onClick(Backpack.java:139)[?:?] at sun.reflect.GeneratedMethodAccessor628.invoke(Unknown Source)[?:?] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)[?:1.8.0_72] at java.lang.reflect.Method.invoke(Method.java:498)[?:1.8.0_72] at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:306)[spigot-1.9.4.jar:git-Spigot-c6871e2-0cd0397] ... 15 more