I made a type in my server name in nginx/site-available/default and so my http traffic is being transferred to the wrong https site. I corrected the type but I can't get Nginx to pick the change.
I am using Letsencrypt certificate, my stack is Ubuntu 16.04 Nginx, gunicorn, flask
You'll need to restart or reload NGINX from the CLI each time you make configuration changes.
service nginx restart
or
systemctl restart nginx
Try a new incognito/private browser window. Sometimes Chrome/Firefox stores the information for some time.
No problem :-).
NGINX doesn't function dynamically like changes to an .htaccess file would with Apache, so much like changes to Apaches core configuration, NGINX has to be restarted with each change that gets made, whether it's one letter or 50+ lines.