Letsencrypt Error – Problem binding to port 443: Could not bind to IPv4 or IPv6.. Skipping

If you try to start to renew, you can meet this error

Problem binding to port 443: Could not bind to IPv4 or IPv6.. Skipping

This error simple to resolution is stop to web server and try to renew.

$ sudo apachectl stop
$ sudo certbot-auto renew
$ sudo apachectl start

If you want to renew automatic by cron. edit to this.

$sudo crontab -e

30 2 * * 1 apachectl stop&&/usr/local/sbin/certbot-auto renew >> /var/log/le-renew.log&&apachectl start