xacro module of ros2 foxy is not parsing when there is:
<xacro:include filename="$(find package)/other_file.xacro" />
xacro --v 1 src/simple_robot_description/urdf/robot.urdf.xacro outputs
substitution args not supported: cannot import name ‘Log’ from ‘rosgraph_msgs.msg’ (/opt/ros/foxy/lib/python3.8/site-packages/rosgraph_msgs/msg/init.py)
when processing file: src/simple_robot_description/urdf/robot.urdf.xacro