https://community.librenms.org/
If you are having troubles with discovery/polling include the pastebin output of:
./discovery.php -h HOSTNAME -d | ./pbin.sh
./poller.php -h HOSTNAME -r -f -d | ./pbin.sh
If you need to post any text longer than a few lines, please use a pastebin service such as https://p.libren.ms using non-expiring pastes.