python - No module named 'PIL' - Stack Overflow
stackoverflow.com › questions › 49247310Mar 13, 2018 · To fix the issue, I uninstalled PIL and Pillow through sudo pip3 uninstall pillow and sudo apt-get purge python3-pil. I then restarted and then used sudo -H pip3 install pillow to reinstall Pillow. The only step I was missing before was rebooting, and not reinstalling PIL afterwards. It seems to have worked without any issues so far.