Configure your HTTP server to serve that subdomain from HTTPS. Here's an example using nginx: https://linuxize.com/post/redirect-http-to-https-in-nginx/ https:

Configure your HTTP server to serve that subdomain from HTTPS. Here's an example using nginx: https://linuxize.com/post/redirect-http-to-https-in-nginx/ https://linuxize.com/post/redirect-http-to-https-in-nginx/