the librenms.example.com is just an example it’s not meant to be a valid url to anything.
what are you typing in for librenms.example.com? it should be your hostname or DNS name of that server you are installing on. In another word, you need to type in your hostname/install.php
Thanks for your help! That definitely seems to make more sense. Changing the url to reflect my actual hostname did help somewhat as now I’m getting a “502 Bad Gateway” error when opening that link, so at least there’s some progress.
In case you’re using Nginx that is a frequent error, if it can’t reach the backend server, which could mean no php-fpm process is running on your system (or it is misconfigured).
I hope that could give you some pointers to search further.
In case you have any error logs (webserver and/or PHP), you could try to post them here. Maybe we can figure it out together.
If you get redirected to your login page when going to install.php then it’s because you’ve got config.php setup already. Move config.php out of the way and retry install.php