[ROS Noetic] AttributeError: module 'rviz' has no attribute 'VisualizationFrame' (fixed) about champ_setup_assistant

[fan-ziqi]

~/catkin_ws$ roslaunch champ_setup_assistant setup_assistant.launch
 
... logging to /home/user/.ros/log/e8c9ff6a-b90d-11ed-9fec-b5b3893dba3e/roslaunch-myPC.log
Checking log directory for disk usage. This may take a while.
Press Ctrl-C to interrupt
Done checking log file disk usage. Usage is <1GB.

started roslaunch server http://myPC:32999/

SUMMARY
========

PARAMETERS
 * /rosdistro: noetic
 * /rosversion: 1.15.15

NODES
  /
    champ_setup_assistant (champ_setup_assistant/setup_assistant.py)

auto-starting new master
process[master]: started with pid [582802]
ROS_MASTER_URI=http://localhost:11311

setting /run_id to e8c9ff6a-b90d-11ed-9fec-b5b3893dba3e
process[rosout-1]: started with pid [582823]
started core service [/rosout]
process[champ_setup_assistant-2]: started with pid [582826]
Traceback (most recent call last):
  File "/home/user/catkin_ws/src/champ_setup_assistant/scripts/setup_assistant.py", line 79, in <module>
    sa = SetupAssistant()
  File "/home/user/catkin_ws/src/champ_setup_assistant/scripts/setup_assistant.py", line 54, in __init__
    self.robot_viz = RvizWidget(self)
  File "/home/user/catkin_ws/src/champ_setup_assistant/scripts/rviz_widget.py", line 57, in __init__
    self.frame = rviz.VisualizationFrame()
AttributeError: module 'rviz' has no attribute 'VisualizationFrame'

The fix is to replace import rviz with from rviz import bindings as rviz

in the file champ_setup_assistant/scripts/setup_assistant.py

It should be champ_setup_assistant/scripts/rviz_widget.py