[14:00:12] [Server thread/WARN]: java.lang.ClassNotFoundException: net.minecraft.server.v1_11_R1.ChatMessageType
[14:00:12] [Server thread/WARN]: at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:91)
[14:00:12] [Server thread/WARN]: at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:86)
[14:00:12] [Server thread/WARN]: at java.lang.ClassLoader.loadClass(Unknown Source)
[14:00:12] [Server thread/WARN]: at java.lang.ClassLoader.loadClass(Unknown Source)
[14:00:12] [Server thread/WARN]: at java.lang.Class.forName0(Native Method)
[14:00:12] [Server thread/WARN]: at java.lang.Class.forName(Unknown Source)
[14:00:12] [Server thread/WARN]: at me.zombie_striker.pluginconstructor.HotbarMessager.<clinit>(HotbarMessager.java:43)
[14:00:12] [Server thread/WARN]: at me.zombie_striker.qg.Main.sendHotbarGunAmmoCount(Main.java:2857)
[14:00:12] [Server thread/WARN]: at me.zombie_striker.qg.Main.onClick(Main.java:2332)
[14:00:12] [Server thread/WARN]: at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
[14:00:12] [Server thread/WARN]: at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
[14:00:12] [Server thread/WARN]: at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
[14:00:12] [Server thread/WARN]: at java.lang.reflect.Method.invoke(Unknown Source)
[14:00:12] [Server thread/WARN]: at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:302)
[14:00:12] [Server thread/WARN]: at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62)
[14:00:12] [Server thread/WARN]: at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:502)
[14:00:12] [Server thread/WARN]: at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:487)
[14:00:12] [Server thread/WARN]: at org.bukkit.craftbukkit.v1_11_R1.event.CraftEventFactory.callPlayerInteractEvent(CraftEventFactory.java:234)
[14:00:12] [Server thread/WARN]: at org.bukkit.craftbukkit.v1_11_R1.event.CraftEventFactory.callPlayerInteractEvent(CraftEventFactory.java:201)
[14:00:12] [Server thread/WARN]: at org.bukkit.craftbukkit.v1_11_R1.event.CraftEventFactory.callPlayerInteractEvent(CraftEventFactory.java:197)
[14:00:12] [Server thread/WARN]: at net.minecraft.server.v1_11_R1.PlayerConnection.a(PlayerConnection.java:1392)
[14:00:12] [Server thread/WARN]: at net.minecraft.server.v1_11_R1.PacketPlayInArmAnimation.a(PacketPlayInArmAnimation.java:24)
[14:00:12] [Server thread/WARN]: at net.minecraft.server.v1_11_R1.PacketPlayInArmAnimation.a(PacketPlayInArmAnimation.java:1)
[14:00:12] [Server thread/WARN]: at net.minecraft.server.v1_11_R1.PlayerConnectionUtils$1.run(SourceFile:13)
[14:00:12] [Server thread/WARN]: at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
[14:00:12] [Server thread/WARN]: at java.util.concurrent.FutureTask.run(Unknown Source)
[14:00:12] [Server thread/WARN]: at net.minecraft.server.v1_11_R1.SystemUtils.a(SourceFile:46)
[14:00:12] [Server thread/WARN]: at net.minecraft.server.v1_11_R1.MinecraftServer.D(MinecraftServer.java:747)
[14:00:12] [Server thread/WARN]: at net.minecraft.server.v1_11_R1.DedicatedServer.D(DedicatedServer.java:399)
[14:00:12] [Server thread/WARN]: at net.minecraft.server.v1_11_R1.MinecraftServer.C(MinecraftServer.java:678)
[14:00:12] [Server thread/WARN]: at net.minecraft.server.v1_11_R1.MinecraftServer.run(MinecraftServer.java:576)
[14:00:12] [Server thread/WARN]: at java.lang.Thread.run(Unknown Source)
[14:00:12] [Server thread/WARN]: [PluginConstructorAPI] HotBarMessager disabled! Something went wrong with: sendHotBarMessage
[14:00:12] [Server thread/WARN]: [PluginConstructorAPI] Report this to Zombie_Striker
[14:00:12] [Server thread/WARN]: [PluginConstructorAPI] Needed Information: CraftBukkit, git-Spigot-38ddb34-c19c293 (MC: 1.11.2), 1.11.2-R0.1-SNAPSHOT
[14:00:12] [Server thread/WARN]: [PluginConstructorAPI]
https://github.com/ZombieStriker/PluginConstructorAPI