matplotlib -> Could not load source '<__array_function__Internals>': Source unavailable

Question

I am having this problem when using plt.show() or plt.savefig('/path'):

The same error occurs when I try to plot a simple graph:

import matplotlib.pyplot as plt

plt.stackplot(range(4), [2, 2, 2, 2], [1, 2, 3, 4], labels=['a', 'b'])
plt.show()

And in addition to opening a new tab on vscode, Plot.show() is showing Vauelerror error below:

The error is probably in the matplot backend, because the code is right. Does anyone know what I can do?

Answer 1

I was looking for answers and apparently this is a process error in the graph generation.

The fix was simple: keep running the code and update with F5.

Explained answer: https://github.com/microsoft/ptvsd/issues/1291