Unable to secure Plesk panel with Let’s Encrypt.
The following error appears
PLESK_ERROR: Invalid port in redirect target. Only ports 80 and 443 are supported, not 8443
A hostname example.com used to access Plesk panel is not served by Plesk and absent in the domains list.
The following can be found in
Redirect / https://example.com:8443/login_up.php3
Custom redirects configured for the Plesk hostname
Connect to the server via SSH
Remove redirect to Plesk hostname from
Configure Plesk accessible over a hostname referring the following article:
How to make Plesk interface accessible over a hostname without entering the port number on a Linux server