First, go to cPanel's SSL/TLS, Private Keys, View. Note the ID of your TLS key; copy it to your clipboard or something. (Be careful not to grab any extraneous spaces or anything; triple-clicking to select the whole line did work for me, but just be sure you're paying attention.) Then, go to cPanel's Terminal and execute the following commands: mkdir -p ~/virtualenv /opt/alt/python37/bin/python3 -m venv ~/virtualenv/simp_le bash . ~/virtualenv/simp_le/bin/activate …