Hello guys,
Finally, @tpnsolutions help me, and from his help, we conclude that the problem comes from the IP address.
My server was in my room, far from my router, so I connect the server throw wifi without thinking that Virtualmin doesn’t support connection, so I had the IP address 192.168.1.49, then I connected throw ethernet. The IP address has moved to 192.168.1.14. So the problem was a question of IP addresses, So we went to Virtualmin>Server Configuration> Change IP Address and change it to the new one 192.168.1.14 we also went to the file called nano /etc/apache2/sites-available/website.com.conf and make sure the IP address if the virtual host file has been set to the new one for HTTP and HTTPS.
After everything has been set correctly, we recreate the SSL certificate.
And DONE