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io.netty.util.IllegalReferenceCountException: refCnt: 0	at io.netty.buffer.AbstractByteBuf.ensureAccessible(AbstractByteBuf.java:1407)	at io.netty.buffer.AbstractByteBuf.checkIndex(AbstractByteBuf.java:1353)	at io.netty.buffer.PooledUnsafeDirectByteBuf.internalNioBuffer(PooledUnsafeDirectByteBuf.java:331)	at io.netty.buffer.ByteBufUtil.decodeString(ByteBufUtil.java:614)	at io.netty.buffer.AbstractByteBuf.toString(AbstractByteBuf.java:1213)	at io.netty.buffer.AbstractByteBuf.toString(AbstractByteBuf.java:1208)	at com.netas.sv.proxy.InboundPrinterHandler.channelRead(InboundPrinterHandler.java:16)	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:373)	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:359)	at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:351)	at com.netas.sv.proxy.HexDumpProxyFrontendHandler.channelRead(HexDumpProxyFrontendHandler.java:67)	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:373)	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:359)	at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:351)	at io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1334)	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:373)	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:359)	at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:926)	at io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:129)	at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:651)	at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:574)	at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:488)	at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:450)	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)