rosrun rqt_graph rqt_graph error

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Environment: Windows 10, Virtual Box 7.0, Ubuntu 20.04, Anaconda3, Ros1, (Noetic)

Event notes:

-rosversion -d yields noetic -Ros Catkin Workspace created -talker/listener tutorial executes -both components RQT Graph and Gazebo Robot fail. (I have a separate question regarding the latter.) -exercises from the text "Intelligent Autonomous Drones with Cognitive Deep Learning" page 103-4

Error:

$ rosrun rqt_graph rqt_graph
Traceback (most recent call last):
  File "/opt/ros/noetic/lib/rqt_graph/rqt_graph", line 5, in <module>
    from rqt_gui.main import Main
  File "/opt/ros/noetic/lib/python3/dist-packages/rqt_gui/main.py", line 40, in <module>
    from rospkg.rospack import RosPack
ModuleNotFoundError: No module named 'rospkg'