Shengguo Hu
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                                            Shengguo Hu
                                        
                                    I run:roslaunch velodyne_pointcloud VLP16_points.launch results: pcap:="/home/laboshinl/Downloads/velodyne.pcap" [VLP16_points.launch] is neither a launch file in package [velodyne_pointcloud] nor is [velodyne_pointcloud] a launch file name The traceback for the exception was written to...