requirements.txt pip3 install error

[senior0023]

Collecting matplotlib==3.3.0 Using cached matplotlib-3.3.0.tar.gz (38.8 MB) ERROR: Command errored out with exit status 1:

I don't know how to fix this.

[iamvucms]

Hi, I didn't not work a lot in python, you may find solution at the following link https://stackoverflow.com/questions/57444207/how-to-fix-error-error-command-errored-out-with-exit-status-1-python-when-t