help. plugin not work.
[13:14:21 ERROR]: Could not load 'plugins\AsyncWorldEdit-3.4.11.jar' in folder 'plugins'
org.bukkit.plugin.InvalidPluginException: java.lang.ClassFormatError: Duplicate method name "?" with signature "(Ljava.lang.String;)Ljava.lang.String;" in class file org/primesoft/asyncworldedit/AsyncWorldEditMain
at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:133) ~[spigot.jar:git-Spigot-d21162c-61e0c69]
at org.bukkit.plugin.SimplePluginManager.loadPlugin(SimplePluginManager.java:327) ~[spigot.jar:git-Spigot-d21162c-61e0c69]
at org.bukkit.plugin.SimplePluginManager.loadPlugins(SimplePluginManager.java:248) [spigot.jar:git-Spigot-d21162c-61e0c69]
at org.bukkit.craftbukkit.v1_12_R1.CraftServer.loadPlugins(CraftServer.java:308) [spigot.jar:git-Spigot-d21162c-61e0c69]
at net.minecraft.server.v1_12_R1.DedicatedServer.init(DedicatedServer.java:205) [spigot.jar:git-Spigot-d21162c-61e0c69]
at net.minecraft.server.v1_12_R1.MinecraftServer.run(MinecraftServer.java:545) [spigot.jar:git-Spigot-d21162c-61e0c69]
at java.lang.Thread.run(Unknown Source) [?:1.8.0_152]
Caused by: java.lang.ClassFormatError: Duplicate method name "?" with signature "(Ljava.lang.String;)Ljava.lang.String;" in class file org/primesoft/asyncworldedit/AsyncWorldEditMain
at java.lang.ClassLoader.defineClass1(Native Method) ~[?:1.8.0_152]
at java.lang.ClassLoader.defineClass(Unknown Source) ~[?:1.8.0_152]
at java.security.SecureClassLoader.defineClass(Unknown Source) ~[?:1.8.0_152]
at java.net.URLClassLoader.defineClass(Unknown Source) ~[?:1.8.0_152]
at java.net.URLClassLoader.access$100(Unknown Source) ~[?:1.8.0_152]
at java.net.URLClassLoader$1.run(Unknown Source) ~[?:1.8.0_152]
at java.net.URLClassLoader$1.run(Unknown Source) ~[?:1.8.0_152]
at java.security.AccessController.doPrivileged(Native Method) ~[?:1.8.0_152]
at java.net.URLClassLoader.findClass(Unknown Source) ~[?:1.8.0_152]
at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:101) ~[spigot.jar:git-Spigot-d21162c-61e0c69]
at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:86) ~[spigot.jar:git-Spigot-d21162c-61e0c69]
at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:1.8.0_152]
at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:1.8.0_152]
at java.lang.ClassLoader.defineClass1(Native Method) ~[?:1.8.0_152]
at java.lang.ClassLoader.defineClass(Unknown Source) ~[?:1.8.0_152]
at java.security.SecureClassLoader.defineClass(Unknown Source) ~[?:1.8.0_152]
at java.net.URLClassLoader.defineClass(Unknown Source) ~[?:1.8.0_152]
at java.net.URLClassLoader.access$100(Unknown Source) ~[?:1.8.0_152]
at java.net.URLClassLoader$1.run(Unknown Source) ~[?:1.8.0_152]
at java.net.URLClassLoader$1.run(Unknown Source) ~[?:1.8.0_152]
at java.security.AccessController.doPrivileged(Native Method) ~[?:1.8.0_152]
at java.net.URLClassLoader.findClass(Unknown Source) ~[?:1.8.0_152]
at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:101) ~[spigot.jar:git-Spigot-d21162c-61e0c69]
at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:86) ~[spigot.jar:git-Spigot-d21162c-61e0c69]
at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:1.8.0_152]
at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:1.8.0_152]
at java.lang.Class.forName0(Native Method) ~[?:1.8.0_152]
at java.lang.Class.forName(Unknown Source) ~[?:1.8.0_152]
at org.bukkit.plugin.java.PluginClassLoader.<init>(PluginClassLoader.java:64) ~[spigot.jar:git-Spigot-d21162c-61e0c69]
at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:129) ~[spigot.jar:git-Spigot-d21162c-61e0c69]
... 6 more