Installing LibreNMS on Ubuntu 20.04 with NGINX, getting "502 Bad Gateway" in the Web Installer step

Having similar issues, and have not found a resolution, any help would be greatly appreciated,.

502 Bad Gateway

nginx/1.17.10 (Ubuntu 18.04)

validate.php output -
$ ./validate.php

Component Version
LibreNMS 1.70.1-1-ga3635d0b7
DB Schema 2020_10_12_095504_mempools_add_oids (191)
PHP 7.4.13
Python 3.6.9
MySQL 10.1.47-MariaDB-0ubuntu0.18.04.1
RRDTool 1.7.0
SNMP NET-SNMP 5.7.3

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

[OK] Composer Version: 2.0.8
[OK] Dependencies up-to-date.
[OK] Database connection successful
[OK] Database schema correct

daily.sh output -
$ ./daily.sh
Updating to latest codebase OK
Updating Composer packages OK
Updating SQL-Schema OK
Updating submodules OK
Cleaning up DB OK
Fetching notifications OK
Caching PeeringDB data