Cannot access Librenms WebGui - Service Unavailable

I have installed Librenms and trying to access WebGui…but it gives me Service Unavailable error.

Below is the output of ./validate.php

-bash-4.2$ ./validate.php

Component Version
LibreNMS 22.5.0-51-gc1a59e2
DB Schema Not Connected (0)
PHP 7.4.30
Python 3.6.8
MySQL Not Connected
RRDTool 1.4.8
SNMP 5.7.2

====================================

[OK] Composer Version: 2.3.7
[OK] Dependencies up-to-date.
Could not connect to database, check logs/librenms.log.
-bash-4.2$

I do httpd is running:

[[email protected] ~]$ sudo systemctl status httpd
[sudo] Password for [email protected]:
Your password will expire in 15 day(s).
● httpd.service - The Apache HTTP Server
Loaded: loaded (/usr/lib/systemd/system/httpd.service; enabled; vendor preset: disabled)
Active: active (running) since Tue 2022-06-14 19:51:19 UTC; 5 days ago
Docs: man:httpd(8)
man:apachectl(8)
Process: 15530 ExecStop=/bin/kill -WINCH ${MAINPID} (code=exited, status=0/SUCCESS)
Process: 745 ExecReload=/usr/sbin/httpd $OPTIONS -k graceful (code=exited, status=0/SUCCESS)
Main PID: 16505 (httpd)
Status: “Total requests: 0; Current requests/sec: 0; Current traffic: 0 B/sec”
CGroup: /system.slice/httpd.service
├─ 864 /usr/sbin/httpd -DFOREGROUND
├─ 865 /usr/sbin/httpd -DFOREGROUND
├─ 866 /usr/sbin/httpd -DFOREGROUND
├─ 867 /usr/sbin/httpd -DFOREGROUND
├─ 868 /usr/sbin/httpd -DFOREGROUND
└─16505 /usr/sbin/httpd -DFOREGROUND

Jun 14 19:51:19 root systemd[1]: Starting The Apache HTTP Server…
Jun 14 19:51:19 root systemd[1]: Started The Apache HTTP Server.
Jun 15 03:23:02 root systemd[1]: Reloading The Apache HTTP Server.
Jun 15 03:23:02 root systemd[1]: Reloaded The Apache HTTP Server.
Jun 19 03:35:02 root systemd[1]: Reloading The Apache HTTP Server.
Jun 19 03:35:03 root systemd[1]: Reloaded The Apache HTTP Server.

Getting below error when trying to open Webgui using the local IP:

Any help is appreciated. Thanks in advance!