How to Solve NameError: name 'FigureCanvasQTAgg' is not defined -- matplotlib
Solution: Import the 'FigureCanvasQTAgg' module
To Solve the error, add the following line to the top of your code.
from matplotlib.backends.backend_qt5agg import FigureCanvasQTAgg
For more information:
Python matplotlib FigureCanvasQTAgg