I am doing a tf_quiz it. I uploaded the launch file as well as but I got only 7 marks and overall in the learning path section I only got 3.5 marks. Can someone tell me what is the problem
<node name=“controller_spawner” pkg=“controller_manager” type=“spawner” respawn=“false”
output="screen" ns="/pi_robot" args="head_pan_joint_position_controller head_tilt_joint_position_controller torso_joint_position_controller
left_shoulder_forward_joint_position_controller right_shoulder_forward_joint_position_controller left_shoulder_up_joint_position_controller
right_shoulder_up_joint_position_controller left_elbow_joint_position_controller right_elbow_joint_position_controller left_wrist_joint_position_controller
right_wrist_joint_position_controller joint_state_controller"/>
<node name=“robot_state_publisher” pkg=“robot_state_publisher” type=“robot_state_publisher”
respawn="false" output="screen">
<remap from="/joint_states" to="/pi_robot/joint_states" />