obstacle_avoidance_2Dlaser_vfh_px4.launch执行报错

[Mercuryyu]

ERROR: cannot launch node of type [px4_command/set_mode]: Cannot locate node of type [set_mode] in package [px4_command]. Make sure file exists in package path and permission is set to executable (chmod +x)
[ WARN] [1603369640.950780969, 68.606000000]: PR: request param #59 timeout, retries left 2, and 1 params still missing
[ WARN] [1603369640.950931616, 68.606000000]: PR: Param CBRK_FLIGHTTERM (58/563): 121212 different index: 59/564

提示找不到set_mode节点，但是编译是成功的，QGC上传节点后，vfh一直收不到坐标点，请问这是什么问题？？
Please set the waypoint in QGC before running this program.
wait a moment