io.protostuff.runtime.RuntimeUnsafeFieldFactory cannot have the same number

ExecutionException: java.lang.RuntimeException: io.netty.handler.codec.EncoderException: java.lang.IllegalStateException: io.protostuff.runtime.Runti
meUnsafeFieldFactory$9$1@254189a5 and io.protostuff.runtime.RuntimeUnsafeFieldFactory$9$1@5b03de85 cannot have the same number.
io.netty.handler.codec.EncoderException: java.lang.IllegalStateException: io.protostuff.runtime.RuntimeUnsafeFieldFactory$9$1@254189a5 and io.protostuff.runt
ime.RuntimeUnsafeFieldFactory$9$1@5b03de85 cannot have the same number.
        at io.netty.handler.codec.MessageToByteEncoder.write(MessageToByteEncoder.java:125)
        at io.netty.channel.AbstractChannelHandlerContext.invokeWrite0(AbstractChannelHandlerContext.java:749)
        at io.netty.channel.AbstractChannelHandlerContext.invokeWrite(AbstractChannelHandlerContext.java:741)
        at io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:827)
        at io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:734)
        at io.netty.handler.timeout.IdleStateHandler.write(IdleStateHandler.java:286)
        at io.netty.channel.AbstractChannelHandlerContext.invokeWrite0(AbstractChannelHandlerContext.java:749)
        at io.netty.channel.AbstractChannelHandlerContext.invokeWrite(AbstractChannelHandlerContext.java:741)
        at io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:827)
        at io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:734)
        at io.netty.channel.ChannelDuplexHandler.write(ChannelDuplexHandler.java:106)
        at org.apache.dubbo.remoting.transport.netty4.NettyClientHandler.write(NettyClientHandler.java:87)
        at io.netty.channel.AbstractChannelHandlerContext.invokeWrite0(AbstractChannelHandlerContext.java:749)
        at io.netty.channel.AbstractChannelHandlerContext.invokeWrite(AbstractChannelHandlerContext.java:741)
        at io.netty.channel.AbstractChannelHandlerContext.access$1900(AbstractChannelHandlerContext.java:39)
        at io.netty.channel.AbstractChannelHandlerContext$AbstractWriteTask.write(AbstractChannelHandlerContext.java:1100)
        at io.netty.channel.AbstractChannelHandlerContext$WriteAndFlushTask.write(AbstractChannelHandlerContext.java:1147)
        at io.netty.channel.AbstractChannelHandlerContext$AbstractWriteTask.run(AbstractChannelHandlerContext.java:1089)
        at io.netty.util.concurrent.AbstractEventExecutor.safeExecute(AbstractEventExecutor.java:163)
        at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:418)
        at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:454)
        at io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:873)
        at io.netty.util.concurrent.DefaultThreadFactory$DefaultRunnableDecorator.run(DefaultThreadFactory.java:144)
        at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.IllegalStateException: io.protostuff.runtime.RuntimeUnsafeFieldFactory$9$1@254189a5 and io.protostuff.runtime.RuntimeUnsafeFieldFactory$
9$1@5b03de85 cannot have the same number.
        at io.protostuff.runtime.ArrayFieldMap.<init>(ArrayFieldMap.java:44)
        at io.protostuff.runtime.RuntimeSchema.createFieldMap(RuntimeSchema.java:381)
        at io.protostuff.runtime.RuntimeSchema.<init>(RuntimeSchema.java:360)
        at io.protostuff.runtime.RuntimeSchema.createFrom(RuntimeSchema.java:282)
        at io.protostuff.runtime.RuntimeSchema.createFrom(RuntimeSchema.java:187)