Hi
@Pong , Thank you for answer me. my site is work now.
Your reply reminds me of 'where did I get SSL serticate' I find out this command will gen ssl let's encrypt for me [ certbot certonly --webroot -w /var/www/html/ -d polaris17.com ] after run this command I always get followthig this:
You have an existing certificate that has exactly the same domains or certificate name you requested and isn't close to expiry.
What would you like to do?
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
1: Keep the existing certificate for now
2: Renew & replace the cert (limit ~5 per 7 days)
choosing 1 or 2 is not work for me . so I decided to delete both privatekey and certificate file and run certbot again. so I can access my site now.