Fixed it:
sudo /home/ec2-user/.local/share/letsencrypt/bin/pip install cyrptography
sudo /home/ec2-user/.local/share/letsencrypt/bin/pip install interface
sudo /home/ec2-user/.local/share/letsencrypt/bin/pip install pyrfc3339
sudo /home/ec2-user/.local/share/letsencrypt/bin/pip install werkzeug
sudo /home/ec2-user/.local/share/letsencrypt/bin/pip install psutil