[03:34:04 ERROR]: null
org.bukkit.command.CommandException: Unhandled exception executing command 'questaddon' in plugin QuestGuiAddon v1.0.0-SNAPSHOT
        at org.bukkit.command.PluginCommand.execute(PluginCommand.java:46) ~[patched_1.12.2.jar:git-Paper-1620]
        at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:152) ~[patched_1.12.2.jar:git-Paper-1620]
        at org.bukkit.craftbukkit.v1_12_R1.CraftServer.dispatchCommand(CraftServer.java:685) ~[patched_1.12.2.jar:git-Paper-1620]
        at net.minecraft.server.v1_12_R1.PlayerConnection.handleCommand(PlayerConnection.java:1492) ~[patched_1.12.2.jar:git-Paper-1620]
        at net.minecraft.server.v1_12_R1.PlayerConnection.a(PlayerConnection.java:1297) ~[patched_1.12.2.jar:git-Paper-1620]
        at net.minecraft.server.v1_12_R1.PacketPlayInChat.a(PacketPlayInChat.java:45) ~[patched_1.12.2.jar:git-Paper-1620]
        at net.minecraft.server.v1_12_R1.PacketPlayInChat.a(PacketPlayInChat.java:5) ~[patched_1.12.2.jar:git-Paper-1620]
        at net.minecraft.server.v1_12_R1.PlayerConnectionUtils.lambda$ensureMainThread$0(PlayerConnectionUtils.java:14) ~[patched_1.12.2.jar:git-Paper-1620]
        at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) ~[?:1.8.0_312]
        at java.util.concurrent.FutureTask.run(FutureTask.java:266) ~[?:1.8.0_312]
        at net.minecraft.server.v1_12_R1.SystemUtils.a(SourceFile:46) ~[patched_1.12.2.jar:git-Paper-1620]
        at net.minecraft.server.v1_12_R1.MinecraftServer.D(MinecraftServer.java:850) ~[patched_1.12.2.jar:git-Paper-1620]
        at net.minecraft.server.v1_12_R1.DedicatedServer.D(DedicatedServer.java:423) ~[patched_1.12.2.jar:git-Paper-1620]
        at net.minecraft.server.v1_12_R1.MinecraftServer.C(MinecraftServer.java:774) ~[patched_1.12.2.jar:git-Paper-1620]
        at net.minecraft.server.v1_12_R1.MinecraftServer.run(MinecraftServer.java:666) ~[patched_1.12.2.jar:git-Paper-1620]
        at java.lang.Thread.run(Thread.java:748) [?:1.8.0_312]
Caused by: java.lang.LinkageError: loader constraint violation: when resolving interface method "net.kyori.adventure.text.Component.empty()Lnet/kyori/adventure/text/TextComponent;" the class loader (instance of org/bukkit/plugin/java/PluginClassLoader) of the current class, net/kyori/adventure/text/flattener/ComponentFlattenerImpl, and the class loader (instance of org/bukkit/plugin/java/PluginClassLoader) for the method's defining class, net/kyori/adventure/text/Component, have different Class objects for the type net/kyori/adventure/text/TextComponent used in the signature
        at net.kyori.adventure.text.flattener.ComponentFlattenerImpl.flatten0(ComponentFlattenerImpl.java:81) ~[?:?]
        at net.kyori.adventure.text.flattener.ComponentFlattenerImpl.flatten(ComponentFlattenerImpl.java:75) ~[?:?]
        at net.kyori.adventure.text.serializer.legacy.LegacyComponentSerializerImpl.serialize(LegacyComponentSerializerImpl.java:275) ~[?:?]
        at me.kr1s_d.questguiaddon.gui.builder.gui.PaginatedBuilder.create(PaginatedBuilder.java:62) ~[?:?]
        at me.kr1s_d.questguiaddon.gui.QuestGui.<init>(QuestGui.java:28) ~[?:?]
        at me.kr1s_d.questguiaddon.service.InternalQuestService.calculateQuestAndProcessGuiOpening(InternalQuestService.java:63) ~[?:?]
        at me.kr1s_d.questguiaddon.commands.OpenGuiCommand.execute(OpenGuiCommand.java:20) ~[?:?]
        at me.kr1s_d.commandframework.CommandManager.onCommand(CommandManager.java:62) ~[?:?]
        at org.bukkit.command.PluginCommand.execute(PluginCommand.java:44) ~[patched_1.12.2.jar:git-Paper-1620]
        ... 15 more