502 Bad Gateway

[Radjin]

I am also having this problem on my Linux box I run at home.  I had the
webserver running perfectly then followed directions to activate virtual
hosting.  That also started out working perfectly for a while then suddenly
I was getting the 502 error when launching anything from the static site.  I
run Wordpress and Piwigo in frames within my static site.  I have tried the
sock to :9000 listen option with no change. 

nginx version: nginx/1.14.2

PHP 7.3.4-2 (cli) (built: Apr 13 2019 19:05:48) ( NTS )
Copyright (c) 1997-2018 The PHP Group
Zend Engine v3.3.4, Copyright (c) 1998-2018 Zend Technologies
    with Zend OPcache v7.3.4-2, Copyright (c) 1999-2018, by Zend
Technologies

Linux webserver 4.19.0-5-amd64 #1 SMP Debian 4.19.37-5+deb10u2 (2019-08-08)
x86_64

Any help would be much appreciated.  I am quite the noob when it comes to
setting up a raw Linux webserver so am learning as I go.

Radjin~

Posted at Nginx Forum: https://forum.nginx.org/read.php?2,285209,285261#msg-285261