[12:54:06] [Server thread/ERROR]: Could not pass event PlayerCommandPreprocessEvent to QuestBook v1.0
org.bukkit.event.EventException: null
	at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:306) ~[spigot-1.12.jar:git-Spigot-596221b-9a1fc1e]
	at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62) ~[spigot-1.12.jar:git-Spigot-596221b-9a1fc1e]
	at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:499) [spigot-1.12.jar:git-Spigot-596221b-9a1fc1e]
	at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:484) [spigot-1.12.jar:git-Spigot-596221b-9a1fc1e]
	at net.minecraft.server.v1_12_R1.PlayerConnection.handleCommand(PlayerConnection.java:1377) [spigot-1.12.jar:git-Spigot-596221b-9a1fc1e]
	at net.minecraft.server.v1_12_R1.PlayerConnection.a(PlayerConnection.java:1220) [spigot-1.12.jar:git-Spigot-596221b-9a1fc1e]
	at net.minecraft.server.v1_12_R1.PacketPlayInChat.a(PacketPlayInChat.java:45) [spigot-1.12.jar:git-Spigot-596221b-9a1fc1e]
	at net.minecraft.server.v1_12_R1.PacketPlayInChat.a(PacketPlayInChat.java:1) [spigot-1.12.jar:git-Spigot-596221b-9a1fc1e]
	at net.minecraft.server.v1_12_R1.PlayerConnectionUtils$1.run(SourceFile:13) [spigot-1.12.jar:git-Spigot-596221b-9a1fc1e]
	at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) [?:1.8.0_191]
	at java.util.concurrent.FutureTask.run(Unknown Source) [?:1.8.0_191]
	at net.minecraft.server.v1_12_R1.SystemUtils.a(SourceFile:46) [spigot-1.12.jar:git-Spigot-596221b-9a1fc1e]
	at net.minecraft.server.v1_12_R1.MinecraftServer.D(MinecraftServer.java:747) [spigot-1.12.jar:git-Spigot-596221b-9a1fc1e]
	at net.minecraft.server.v1_12_R1.DedicatedServer.D(DedicatedServer.java:405) [spigot-1.12.jar:git-Spigot-596221b-9a1fc1e]
	at net.minecraft.server.v1_12_R1.MinecraftServer.C(MinecraftServer.java:678) [spigot-1.12.jar:git-Spigot-596221b-9a1fc1e]
	at net.minecraft.server.v1_12_R1.MinecraftServer.run(MinecraftServer.java:576) [spigot-1.12.jar:git-Spigot-596221b-9a1fc1e]
	at java.lang.Thread.run(Unknown Source) [?:1.8.0_191]
Caused by: java.lang.NoSuchMethodError: me.blackvein.quests.Quester.getObjectives(Lme/blackvein/quests/Quest;Z)Ljava/util/LinkedList;
	at kdvn.quest.questbook.PageManager.getCurrentQuestInfo(PageManager.java:121) ~[?:?]
	at kdvn.quest.questbook.BookManager.showCurrentQuests(BookManager.java:58) ~[?:?]
	at kdvn.quest.questbook.main.MainQuestBook.onCommandddddd(MainQuestBook.java:250) ~[?:?]
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_191]
	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_191]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_191]
	at java.lang.reflect.Method.invoke(Unknown Source) ~[?:1.8.0_191]
	at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:302) ~[spigot-1.12.jar:git-Spigot-596221b-9a1fc1e]
	... 16 more