Помогите С ошибкой в консоле

16:54:24 [WARNING] Promise done already:
io.netty.util.IllegalReferenceCountException: refCnt: 0, decrement: 1
at io.netty.buffer.AbstractReferenceCountedByteBuf.release(AbstractReferenceCountedByteBuf.java:115)
at io.netty.util.ReferenceCountUtil.release(ReferenceCountUtil.java:53)
at io.netty.channel.ChannelOutboundBuffer.fail(ChannelOutboundBuffer.java:231)
at io.netty.channel.AbstractChannel$AbstractUnsafe.flushNow(AbstractChannel.java:743)
at io.netty.channel.AbstractChannel$AbstractUnsafe.flush(AbstractChannel.java:654)
at io.netty.channel.AbstractChannel$AbstractUnsafe.write(AbstractChannel.java:644)
at io.netty.channel.DefaultChannelPipeline$HeadHandler.write(DefaultChannelPipeline.java:1040)
at io.netty.channel.DefaultChannelHandlerContext.invokeWrite0(DefaultChannelHandlerContext.java:716)
at io.netty.channel.DefaultChannelHandlerContext.invokeWrite(DefaultChannelHandlerContext.java:700)
at io.netty.channel.DefaultChannelHandlerContext.write(DefaultChannelHandlerContext.java:692)
at io.netty.channel.DefaultChannelHandlerContext.write(DefaultChannelHandlerContext.java:480)
at org.spigotmc.netty.OutboundManager.write(OutboundManager.java:30)
at io.netty.channel.DefaultChannelHandlerContext.invokeWrite0(DefaultChannelHandlerContext.java:716)
at io.netty.channel.DefaultChannelHandlerContext.invokeWrite(DefaultChannelHandlerContext.java:700)
at io.netty.channel.DefaultChannelHandlerContext.write(DefaultChannelHandlerContext.java:692)
at io.netty.channel.DefaultChannelHandlerContext.write(DefaultChannelHandlerContext.java:687)
at org.spigotmc.netty.PacketEncoder.write(PacketEncoder.java:59)
at io.netty.channel.DefaultChannelHandlerContext.invokeWrite0(DefaultChannelHandlerContext.java:716)
at io.netty.channel.DefaultChannelHandlerContext.invokeWrite(DefaultChannelHandlerContext.java:700)
at io.netty.channel.DefaultChannelHandlerContext.write(DefaultChannelHandlerContext.java:692)
at io.netty.channel.DefaultChannelHandlerContext.write(DefaultChannelHandlerContext.java:687)
at io.netty.channel.DefaultChannelPipeline.write(DefaultChannelPipeline.java:882)
at io.netty.channel.AbstractChannel.write(AbstractChannel.java:291)
at org.spigotmc.netty.NettyNetworkManager.queue0(NettyNetworkManager.java:205)
at org.spigotmc.netty.NettyNetworkManager.access$000(NettyNetworkManager.java:37)
at org.spigotmc.netty.NettyNetworkManager$3.run(NettyNetworkManager.java:183)
at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:353)
at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:365)
at io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:101)
at java.lang.Thread.run(Thread.java:744)

 

Попробуй отключить Netty в конфигурации Spigot.