What needs to be launched to use publishTrajectoryLine?

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I have a node which determines a trajectory with moveit and I want to be able to display it in rviz.

I belive the publishTrajectoryLine from the rviz_visual_tools is the right tool for this (as found here: http://docs.ros.org/kinetic/api/movei...). I have added a MarkerArray to rviz, which is subscribed to /rviz_visual_tools.

When I use the demo.launch file from ur10_e_moveit_config (which is from fmauch_universal_robot) I am able to see the path in rviz, but when using my own launch file, created based on the instructions found here (https://industrial-training-master.re...) i cannot see anything.

I am using the same node to determine the trajectory and run publishTrajectoryLine in both cases. Because of that my question is: What needs to be launched when wanting to use the publishTrajectoryLine? I assume something gets launched with the demo.launch file but not with my planning_execution.launch

Below my launch file:

<launch>
  <!-- The planning and execution components of MoveIt! configured to run -->
  <!-- using the ROS-Industrial interface. -->

  <!-- Non-standard joint names:
       - Create a file [robot_moveit_config]/config/joint_names.yaml
           controller_joint_names: [joint_1, joint_2, ... joint_N] 
       - Update with joint names for your robot (in order expected by rbt controller)
       - and uncomment the following line: -->
  <rosparam command="load" file="$(find grindcell_moveit_config)/config/joint_names.yaml"/>

  <!-- the "sim" argument controls whether we connect to a Simulated or Real robot -->
  <!--  - if sim=false, a robot_ip argument is required -->
  <arg name="sim" default="true" />
  <arg name="robot_ip" unless="$(arg sim)" />


<!-- load the robot_description parameter before launching ROS-I nodes -->
<include file="$(find grindcell_moveit_config)/launch/planning_context.launch" >
  <arg name="load_robot_description" value="true" />
</include>

  <!-- run the robot simulator and action interface nodes -->
  <group if="$(arg sim)">
    <param name="use_sim_time" value="true"/>
    <!--<node name="joint_state_publisher" pkg="joint_state_publisher" type="joint_state_publisher">
      <param name="/use_gui" value="false"/> 
      <rosparam param="/source_list">[/move_group/fake_controller_joint_states]</rosparam>
    </node>-->
    <include file="$(find industrial_robot_simulator)/launch/robot_interface_simulator.launch" />
    <node pkg="rosbag" type="play" name="player" output="screen" args=" --clock --loop /home/dan/bagfiles/2020-01-17-13-23-46.bag"/>
  </group>

  <!-- run the "real robot" interface nodes -->
  <!--   - this typically includes: robot_state, motion_interface, and joint_trajectory_action nodes -->
  <!--   - replace these calls with appropriate robot-specific calls or launch files -->
  <group unless="$(arg sim)">
    <include file="$(find example_organization_ur_launch)/launch/ex-ur10-1.launch" />
    <include file="$(find realsense2_camera)/launch/rs_camera.launch">
    <arg name="filters" value="pointcloud" />
      </include>
  </group>

  <!-- publish the robot state (tf transforms) -->
  <node name="robot_state_publisher" pkg="robot_state_publisher" type="robot_state_publisher" />

  <include file="$(find grindcell_moveit_config)/launch/move_group.launch">
    <arg name="publish_monitored_planning_scene" value="true" />
  </include>

  <include file="$(find grindcell_moveit_config)/launch/moveit_rviz.launch">
    <arg name="config" value="true"/>
  </include>


</launch>