Could not connect to action server - Could not execute trajectory

[manujtrehan]

I was trying to control my robot model and make it follow a cartesian path using ros_descartes. However, while trying to execute the code, I get the following errors:

[ WARN] [1560596479.774029295]: Nominal time value must be greater than or equal to 0.0
[ INFO] [1560596479.785635458]: Computed path of length 10 with cost 4.097252
[ERROR] [1560596484.797170637]: Could not connect to action server
[ERROR] [1560596484.812627409]: Could not execute trajectory!
[ WARN] [1560596484.812992340]: SEVERE WARNING!!! Attempting to unload library while objects created by this loader exist in the heap! You should delete your objects before attempting to unload the library or destroying the ClassLoader. The library will NOT be unloaded.
[ WARN] [1560596484.813060895]: SEVERE WARNING!!! Attempting to unload library while objects created by this loader exist in the heap! You should delete your objects before attempting to unload the library or destroying the ClassLoader. The library will NOT be unloaded.

Can someone please help me with solving this issue?

[benthebear93]

Test env : 18.04 melodic
It was old one but I solve by changing controller.yaml file from

controller_list:
  - name: ""
    action_ns: joint_trajectory_action
    type: FollowJointTrajectory
    joints: [joint_1, joint_2, joint_3, joint_4, joint_5, joint_6]

to

controller_list:
  - name: ""
    action_ns: joint_trajectory_action
    type: FollowJointTrajectory
    joints: 
      - joint_1
      - joint_2
      - joint_3
      - joint_4
      - joint_5
      - joint_6