- Plesk Onyx for Linux
Unable to install Let's Encrypt SSL certificate on a cloned WordPress instance:
Error: Let's Encrypt SSL certificate installation failed: Challenge marked as invalid. Details: Invalid response from http://test.example.com/.well-known/acme-challenge/nWGovlOgRFg588s5ds2LwgK8GmL2-jXC_Qemi9eB7DD5I: "<html>
<head><title>502 Bad Gateway</title></head>
<center><h1>502 Bad Gateway</h1></center>
LiteSpeed web server is used on a server, which has been installed separately from Plesk.
- Enable nginx only for a domain by clearing the checkbox Proxy mode at Plesk > Domains > example.com > Apache & nginx Settings
- Install the Let's Encrypt SSL certificate again