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For some reason, it seems to be reading the XML file as a python launch file. Can you try running this launch file?

test.launch.py

from launch import LaunchDescription
from launch_ros.actions import Node

def generate_launch_description():
  return LaunchDescription([
    Node(
      package="lalosoft_robot_drive_host",
      executable="drive_host",
      output="screen"
      ),
    Node(
      package="lalosoft_robot_ptz_host",
      executable="ptz_host",
      output="screen"
      ),
    Node(
      package="lalosoft_robot_jazzy_drive_host",
      executable="drive_host",
      output="screen"
      ),
    ])