I am asking this question again, because I haven't got any update for my previous question, even though I have made new comments 20 days ago to describe my issue. The question can be found here.
After restarting the kernel, I run the following suggested solution
import matplotlib.pyplot as plt
, and still got the same error:
ImportError: Cannot load backend 'Qt5Agg' which requires the 'qt5' interactive framework, as 'headless' is currently running
Can someone please help me to solve this problem? It is really important for me to use interactive plots.