Unable to identify any set of controllers that can actuate the specified joints: [ joint1 joint2 出错

有些小伙伴在运行

roslaunch marm_gazebo arm_bringup_moveit.launch

的时候，可能会出现如下错误

[ERROR] [1556172904.265708018, 73.989000000]: Unable to identify any set of controllers that can actuate the specified joints: [ joint1 joint2 joint3 joint4 joint5 joint6 ]
[ERROR] [1556172904.265747504, 73.989000000]: Known controllers and their joints:

[ERROR] [1556172904.265815969, 73.989000000]: Apparently trajectory initialization failed

rviz中的机械臂控制可以动，而Gazebo的机械臂无法运动，

当时花了一个晚上时间查阅，也没查到什么？第二天一检查发现

主要是由于

arm_moveit_controller_manager.launch

文件中，下面这句话被注释掉了，大家取消掉就好了，路径见下图

<rosparam file="$(find marm_moveit_config)/config/controllers_gazebo.yaml"/>

最终显示效果如下：

希望能给大家节省点时间～不要像我一样