ItemAdder 3.3.1 bug

[23:44:21] [Netty Server IO #1/ERROR]: [ItemsAdder] Unhandled exception occurred in onPacketReceiving(PacketEvent) for ItemsAdder
java.lang.IllegalAccessError: class ia.m.hJ tried to access method 'void org.bukkit.event.player.PlayerEvent.<init>(org.bukkit.entity.Player, boolean)' (ia.m.hJ is in unnamed module of loader org.bukkit.plugin.java.PluginClassLoader @2ba647c5; org.bukkit.event.player.PlayerEvent is in unnamed module of loader java.net.URLClassLoader @108c4c35)
at ia.m.hJ.<init>(SourceFile:24) ~[ItemsAdder_3.3.1.jar:?]
at ia.m.hJ.<init>(SourceFile:32) ~[ItemsAdder_3.3.1.jar:?]
at ia.m.hE.onPacketReceiving(SourceFile:24) ~[ItemsAdder_3.3.1.jar:?]
at com.comphenix.protocol.injector.SortedPacketListenerList.invokeReceivingListener(SortedPacketListenerList.java:114) [ProtocolLib.jar:5.0.0-SNAPSHOT-b614]
at com.comphenix.protocol.injector.SortedPacketListenerList.invokePacketRecieving(SortedPacketListenerList.java:67) [ProtocolLib.jar:5.0.0-SNAPSHOT-b614]
at com.comphenix.protocol.injector.PacketFilterManager.postPacketToListeners(PacketFilterManager.java:549) [ProtocolLib.jar:5.0.0-SNAPSHOT-b614]
at com.comphenix.protocol.injector.PacketFilterManager.invokePacketReceiving(PacketFilterManager.java:514) [ProtocolLib.jar:5.0.0-SNAPSHOT-b614]
at com.comphenix.protocol.injector.netty.manager.NetworkManagerInjector.onPacketReceiving(NetworkManagerInjector.java:117) [ProtocolLib.jar:5.0.0-SNAPSHOT-b614]
at com.comphenix.protocol.injector.netty.channel.NettyChannelInjector.processInboundPacket(NettyChannelInjector.java:505) [ProtocolLib.jar:5.0.0-SNAPSHOT-b614]
at com.comphenix.protocol.injector.netty.channel.InboundPacketInterceptor.channelRead(InboundPacketInterceptor.java:33) [ProtocolLib.jar:5.0.0-SNAPSHOT-b614]
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379) [netty-transport-4.1.77.Final.jar:4.1.77.Final]
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365) [netty-transport-4.1.77.Final.jar:4.1.77.Final]
at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357) [netty-transport-4.1.77.Final.jar:4.1.77.Final]
at io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:327) [netty-codec-4.1.77.Final.jar:4.1.77.Final]
at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:299) [netty-codec-4.1.77.Final.jar:4.1.77.Final]
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379) [netty-transport-4.1.77.Final.jar:4.1.77.Final]
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365) [netty-transport-4.1.77.Final.jar:4.1.77.Final]
at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357) [netty-transport-4.1.77.Final.jar:4.1.77.Final]
at io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:327) [netty-codec-4.1.77.Final.jar:4.1.77.Final]
at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:299) [netty-codec-4.1.77.Final.jar:4.1.77.Final]
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379) [netty-transport-4.1.77.Final.jar:4.1.77.Final]
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365) [netty-transport-4.1.77.Final.jar:4.1.77.Final]
at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357) [netty-transport-4.1.77.Final.jar:4.1.77.Final]
at io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:327) [netty-codec-4.1.77.Final.jar:4.1.77.Final]
at io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:314) [netty-codec-4.1.77.Final.jar:4.1.77.Final]
at io.netty.handler.codec.ByteToMessageDecoder.callDecode(ByteToMessageDecoder.java:435) [netty-codec-4.1.77.Final.jar:4.1.77.Final]
at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:279) [netty-codec-4.1.77.Final.jar:4.1.77.Final]
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379) [netty-transport-4.1.77.Final.jar:4.1.77.Final]
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365) [netty-transport-4.1.77.Final.jar:4.1.77.Final]
at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357) [netty-transport-4.1.77.Final.jar:4.1.77.Final]
at io.netty.handler.timeout.IdleStateHandler.channelRead(IdleStateHandler.java:286) [netty-handler-4.1.77.Final.jar:4.1.77.Final]
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379) [netty-transport-4.1.77.Final.jar:4.1.77.Final]
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365) [netty-transport-4.1.77.Final.jar:4.1.77.Final]
at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357) [netty-transport-4.1.77.Final.jar:4.1.77.Final]
at io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1410) [netty-transport-4.1.77.Final.jar:4.1.77.Final]
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379) [netty-transport-4.1.77.Final.jar:4.1.77.Final]
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365) [netty-transport-4.1.77.Final.jar:4.1.77.Final]
at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:919) [netty-transport-4.1.77.Final.jar:4.1.77.Final]
at io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:166) [netty-transport-4.1.77.Final.jar:4.1.77.Final]
at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:722) [netty-transport-4.1.77.Final.jar:4.1.77.Final]
at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:658) [netty-transport-4.1.77.Final.jar:4.1.77.Final]
at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:584) [netty-transport-4.1.77.Final.jar:4.1.77.Final]
at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:496) [netty-transport-4.1.77.Final.jar:4.1.77.Final]
at io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:995) [netty-common-4.1.77.Final.jar:4.1.77.Final]
at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74) [netty-common-4.1.77.Final.jar:4.1.77.Final]
at java.lang.Thread.run(Thread.java:1589) [?:?]
[23:44:21] [Netty Server IO #1/ERROR]: Parameters:
net.minecraft.network.protocol.game.PacketPlayInBlockDig@37441ad3[
a=BlockPosition{x=0, y=0, z=0}
b=down
c=DROP_ITEM
d=0
]