MD5sum error:Client [/move_group] wants topic /move_group/goal to have datatype/md5sum [moveit_msgs/MoveGroupActionGoal/..], but our version has [moveit_msgs/MoveGroupActionGoal/...]. Dropping connection.

edit

I am running the sciurus17 sample code file. After running this launch file, when I try to echo the contents of any /move_group/.... topic, I receive the following error:

[ERROR] [1663154112.847994876]: Client [/move_group] wants topic /move_group/goal to have datatype/md5sum [moveit_msgs/MoveGroupActionGoal/152e336e337dce7cbe639f1bd9c65def], but our version has [moveit_msgs/MoveGroupActionGoal/b7138704cefd43a8dd9758d697350b85]. Dropping connection.
Traceback (most recent call last):
  File "/home/limlab/catkin_ws/devel/lib/sciurus17_examples/pick_and_place_right_arm_demo.py", line 15, in <module>
    exec(compile(fh.read(), python_script, 'exec'), context)
  File "/home/limlab/catkin_ws/src/sciurus17_ros/sciurus17_examples/scripts/pick_and_place_right_arm_demo.py", line 155, in <module>
    main()
  File "/home/limlab/catkin_ws/src/sciurus17_ros/sciurus17_examples/scripts/pick_and_place_right_arm_demo.py", line 19, in main
    arm = moveit_commander.MoveGroupCommander("r_arm_waist_group")
  File "/home/limlab/catkin_ws/src/moveit/moveit_commander/src/moveit_commander/move_group.py", line 66, in __init__
    self._g = _moveit_move_group_interface.MoveGroupInterface(
RuntimeError: Unable to connect to move_group action server 'move_group' within allotted time (5s)

This was working perfectly some time ago while I was running the Move Group C++ Interface Tutorial and suddenly stopped working. I would be very grateful if someone could help me figure this out.

I need to access these topics (more specifically move_group/display_planned_path) in order to find the joint velocity for a particular joint in a path planned by moveit. Any workarounds to achieve this will also be much appreciated.

Setup:

Ubuntu 20.04

ROS noetic