After Installing Ssl Getting Wired Error DNS_PROBE_FINISHED_NXDOMAIN

after installing paid ssl certification the web site sometime give some visitors this wired error i'm using laravel 6 the host is aws light sail Ubuntu 18

my laravel conifg in Apache2

<VirtualHost *:80>
        Redirect permanent "/"

<VirtualHost *:443>
ServerAdmin [email protected]

DocumentRoot /var/www/html/star-flight/public

SSLEngine on
SSLCertificateFile /etc/apache2/ssl/server.crt
SSLCertificateKeyFile /etc/apache2/ssl/example.key
SSLCertificateChainFile  /etc/apache2/ssl/chain.crt

<Directory /var/www/html/star-flight/public >
AllowOverride All
Allow from all
 Options Indexes FollowSymLinks MultiViews
 Require all granted
        ErrorLog ${APACHE_LOG_DIR}/error.log

CustomLog ${APACHE_LOG_DIR}/access.log combined



That error message is a DNS error which indicates that the IP address for the domain cannot be found. It is not related to SSL, as browser has not connected to the site to begin SSL negotiation.

If the site opens fine for some and not others, then it could be a DNS propagation issue.

Review your DNS settings. You also can check DNS propagation at