Physical Multirobot AMCL Not Able To Transform To /map

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I'm trying to get multiple physical Turtlebot3's functioning with AMCL with namespaces. My setup works perfectly fine with the Gazebo simulations, but moving it to the real thing causes issues.

After running AMCL I get the error:

No laser scan received (and thus no pose updates have been published) for 1600396510.205957 seconds.  Verify that data is being published on the /tb3_0/scan topic.

I have looked at the solution found here: https://answers.ros.org/question/3259... But I couldn't seem to see what I am doing wrong.

There was also another source that I found here: https://github.com/wachlinn/mrc_hw8/b...

but this seemed to have the same setup that I had.

My steps are as follows:

1. On the Turtlebot launch ROS_NAMESPACE=tb3_0 roslaunch turtlebot3_bringup turtlebot3_robot.launch multi_robot_name:="tb3_0"
2. On the Linux workstation (and all following steps) launch ROS_NAMESPACE=tb3_0 roslaunch turtlebot3_bringup turtlebot3_remote.launch multi_robot_name:=tb3_0
3. roslaunch voronoi_node_generator map_provider.launch (see launch files below)
4. roslaunch basic_swarm swarm_amcl.launch multi_robot_name:=tb3_0

Here are the two launch files from steps 3

<launch>
  <arg name="map_name"  default="dining"/>
  <node pkg="map_server" name="map_server" type="map_server" args="$(find voronoi_node_generator)/maps/$(arg map_name).yaml"/>
</launch>

and 4: <launch>

  <!-- Arguments -->
  <arg name="scan_topic"        default="scan"/>
  <arg name="initial_pose_x"    default="0.0"/>
  <arg name="initial_pose_y"    default="0.0"/>
  <arg name="initial_pose_a"    default="0.0"/>
  <arg name="multi_robot_name"  doc="User assigned robot namespace."/>
  <arg name="global_frame_id"   default="map"/>
  <arg name="init_with_global"  default="false"/>

  <!-- AMCL -->
  <group ns="$(arg multi_robot_name)">
    <node pkg="amcl" type="amcl" name="amcl">

      <param name="min_particles"             value="500"/>
      <param name="max_particles"             value="3000"/>
      <param name="kld_err"                   value="0.02"/>
      <param name="update_min_d"              value="0.20"/>
      <param name="update_min_a"              value="0.20"/>
      <param name="resample_interval"         value="1"/>
      <param name="transform_tolerance"       value="0.5"/>
      <param name="recovery_alpha_slow"       value="0.00"/>
      <param name="recovery_alpha_fast"       value="0.00"/>
      <param name="initial_pose_x"            value="$(arg initial_pose_x)"/>
      <param name="initial_pose_y"            value="$(arg initial_pose_y)"/>
      <param name="initial_pose_a"            value="$(arg initial_pose_a)"/>
      <param name="gui_publish_rate"          value="50.0"/>

      <remap from="scan"                      to="$(arg scan_topic)"/>
      <param name="laser_max_range"           value="3.5"/>
      <param name="laser_max_beams"           value="180"/>
      <param name="laser_z_hit"               value="0.5"/>
      <param name="laser_z_short"             value="0.05"/>
      <param name="laser_z_max"               value="0.05"/>
      <param name="laser_z_rand"              value="0.5"/>
      <param name="laser_sigma_hit"           value="0.2"/>
      <param name="laser_lambda_short"        value="0.1"/>
      <param name="laser_likelihood_max_dist" value="2.0"/>
      <param name="laser_model_type"          value="likelihood_field"/>

      <param name="odom_model_type"           value="diff"/>
      <param name="odom_alpha1"               value="0.1"/>
      <param name="odom_alpha2"               value="0.1"/>
      <param name="odom_alpha3"               value="0.1"/>
      <param name="odom_alpha4"               value="0.1"/>
      <param name="tf_prefix"                 value="$(arg multi_robot_name)"/>
      <param name="odom_frame_id"             value="$(arg multi_robot_name)/odom"/>
      <param name="base_frame_id"             value="$(arg multi_robot_name)/base_footprint"/>
      <param name="global_frame_id"           value="$(arg global_frame_id)"/>
      <remap from="initialpose"               to ...