APInventory插件打开饰品背包然后关闭就报错

翻译后：无法将事件库存关闭事件传递到APInventory v1.0
该怎么解决

Could not pass event Inventory Close Event to APInventory v1.0
org.bukkit.event.EventException: null
        at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.j
va:306) ~[Spigot-1.12.2.jar:git-Spigot-7754231-94b0980]
        at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.ja
a:62) ~[Spigot-1.12.2.jar:git-Spigot-7754231-94b0980]
        at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.
ava:499) [Spigot-1.12.2.jar:git-Spigot-7754231-94b0980]
        at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.
ava:484) [Spigot-1.12.2.jar:git-Spigot-7754231-94b0980]
        at org.bukkit.craftbukkit.v1_12_R1.event.CraftEventFactory.handleInvent
ryCloseEvent(CraftEventFactory.java:886) [Spigot-1.12.2.jar:git-Spigot-7754231-
4b0980]
        at net.minecraft.server.v1_12_R1.PlayerConnection.a(PlayerConnection.ja
a:1664) [Spigot-1.12.2.jar:git-Spigot-7754231-94b0980]
        at net.minecraft.server.v1_12_R1.PacketPlayInCloseWindow.a(PacketPlayIn
loseWindow.java:18) [Spigot-1.12.2.jar:git-Spigot-7754231-94b0980]
        at net.minecraft.server.v1_12_R1.PacketPlayInCloseWindow.a(PacketPlayIn
loseWindow.java:1) [Spigot-1.12.2.jar:git-Spigot-7754231-94b0980]
        at net.minecraft.server.v1_12_R1.PlayerConnectionUtils$1.run(SourceFile
13) [Spigot-1.12.2.jar:git-Spigot-7754231-94b0980]
        at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
?:1.8.0_131]
        at java.util.concurrent.FutureTask.run(Unknown Source) [?:1.8.0_131]
        at net.minecraft.server.v1_12_R1.SystemUtils.a(SourceFile:46) [Spigot-1
12.2.jar:git-Spigot-7754231-94b0980]
        at net.minecraft.server.v1_12_R1.MinecraftServer.D(MinecraftServer.java
748) [Spigot-1.12.2.jar:git-Spigot-7754231-94b0980]
        at net.minecraft.server.v1_12_R1.DedicatedServer.D(DedicatedServer.java
406) [Spigot-1.12.2.jar:git-Spigot-7754231-94b0980]
        at net.minecraft.server.v1_12_R1.MinecraftServer.C(MinecraftServer.java
679) [Spigot-1.12.2.jar:git-Spigot-7754231-94b0980]
        at net.minecraft.server.v1_12_R1.MinecraftServer.run(MinecraftServer.ja
a:577) [Spigot-1.12.2.jar:git-Spigot-7754231-94b0980]
        at java.lang.Thread.run(Unknown Source) [?:1.8.0_131]
Caused by: java.lang.NoClassDefFoundError: org/serverct/ersha/jd/AttributeAPI
        at com.mxt.APInventory.Listeners.OnInventoryEvent.onInventoryCloseEvent
OnInventoryEvent.java:41) ~[?:?]
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.
_131]
        at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.
_131]
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:
.8.0_131]
        at java.lang.reflect.Method.invoke(Unknown Source) ~[?:1.8.0_131]
        at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.j
va:302) ~[Spigot-1.12.2.jar:git-Spigot-7754231-94b0980]
        ... 16 more
Caused by: java.lang.ClassNotFoundException: org.serverct.ersha.jd.AttributeAPI
        at java.net.URLClassLoader.findClass(Unknown Source) ~[?:1.8.0_131]
        at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader
java:101) ~[Spigot-1.12.2.jar:git-Spigot-7754231-94b0980]
        at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader
java:86) ~[Spigot-1.12.2.jar:git-Spigot-7754231-94b0980]
        at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:1.8.0_131]
        at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:1.8.0_131]
        at com.mxt.APInventory.Listeners.OnInventoryEvent.onInventoryCloseEvent
OnInventoryEvent.java:41) ~[?:?]
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.
_131]
        at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.
_131]
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:
.8.0_131]
        at java.lang.reflect.Method.invoke(Unknown Source) ~[?:1.8.0_131]
        at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.j
va:302) ~[Spigot-1.12.2.jar:git-Spigot-7754231-94b0980]
        ... 16 more
>

你没安装前置 AttributePlus https://www.mcbbs.net/forum.php?mod=viewthread&tid=898670