Error message indicates DNS resolution failure for the hostname.
Error message indicates DNS resolution failure for the hostname.
The DNS isn't the problem, especially because Plex is functioning. I think http://192.168.1.140 also works fine. Are you sure VirtualHosts is enabled? On that device (192.168.1.140) what operating system is installed? Did you verify the firewall settings there?
I can reach http://192.168.1.140 and also access https://192.168.1.140 using UFW.
You haven’t configured any unusual firewall rules beyond basic settings. It seems like a straightforward rule such as allowing HTTP traffic might be the issue, even though internal forwarding works.
Do you have any local dns configured? If anything you could just edit the host file on your machine
When using DHCP from your USG, you can easily configure a static IP with a hostname for your server.
it's not a hostname but a domain name; adding a static entry in the USG hosts file would work. Be aware it could be removed during firmware updates, so you might need to reapply it later. Just connect via SSH and run the command to set the hostname accordingly. If you used 1.1.1.1 as DNS on your PC, update your local hosts file at C:\Windows\System32\drivers\etc\hosts.