Getting error in RRT


getting this error even running the unit4_exercise_solution code :

[ERROR] [1628766868.534108, 8036.943000]: Error processing request: ‘list’ object has no attribute 'coordinates’
[‘Traceback (most recent call last):\n’, ’ File “/opt/ros/noetic/lib/python3/dist-packages/rospy/impl/”, line 632, in _handle_request\n response = convert_return_to_response(self.handler(request), self.response_class)\n’, ’ File “/home/user/catkin_ws/src/path_planning_course/unit4/scripts/”, line 43, in make_plan\n path = rrt(initial_position, target_position, width, height, map, map_resolution, map_origin, viz)\n’, ’ File “/home/user/catkin_ws/src/path_planning_course/unit4/scripts/”, line 142, in rrt\n tree_viz.append(latest_node)\n’, ’ File “/home/user/catkin_ws/src/path_planning_course/unit4/scripts/”, line 46, in append\n start_point = self.grid_to_world_coord(node.parent.coordinates)\n’, “AttributeError: ‘list’ object has no attribute ‘coordinates’\n”]
[ERROR] [1628766868.547156499, 8036.941000000]: Service call failed: service [/move_base/SrvClientPlugin/make_plan] responded with an error: error processing request: ‘list’ object has no attribute 'coordinates’
[ERROR] [1628766868.914923679, 8037.122000000]: Aborting because a valid plan could not be found. Even after executing all recovery behaviors


I supose you got the code grom this git: git clone Bitbucket

And you are executing it i the RobotIgniteAcademy? Is becuase I executed just that and at least that error is no apearing.