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java.lang.NullPointerException: null	at com.lambdaworks.redis.protocol.ConnectionWatchdog.userEventTriggered(ConnectionWatchdog.java:109)	at io.netty.channel.AbstractChannelHandlerContext.invokeUserEventTriggered(AbstractChannelHandlerContext.java:339)	at io.netty.channel.AbstractChannelHandlerContext.invokeUserEventTriggered(AbstractChannelHandlerContext.java:325)	at io.netty.channel.AbstractChannelHandlerContext.fireUserEventTriggered(AbstractChannelHandlerContext.java:317)	at io.netty.channel.ChannelInboundHandlerAdapter.userEventTriggered(ChannelInboundHandlerAdapter.java:108)	at io.netty.channel.AbstractChannelHandlerContext.invokeUserEventTriggered(AbstractChannelHandlerContext.java:339)