Project homepage seems broken

SSL cert is fine, but nginx is returning a 502 error:
curl -v https://projects.gw-computing.net/projects/dfc
*   Trying 37.59.30.58:443...
* Connected to projects.gw-computing.net (37.59.30.58) port 443 (#0)
* ALPN, offering h2
* ALPN, offering http/1.1
* successfully set certificate verify locations:
*  CAfile: /usr/local/etc/openssl@1.1/cert.pem
*  CApath: /usr/local/etc/openssl@1.1/certs
* TLSv1.3 (OUT), TLS handshake, Client hello (1):
* TLSv1.3 (IN), TLS handshake, Server hello (2):
* TLSv1.2 (IN), TLS handshake, Certificate (11):
* TLSv1.2 (IN), TLS handshake, Server key exchange (12):
* TLSv1.2 (IN), TLS handshake, Server finished (14):
* TLSv1.2 (OUT), TLS handshake, Client key exchange (16):
* TLSv1.2 (OUT), TLS change cipher, Change cipher spec (1):
* TLSv1.2 (OUT), TLS handshake, Finished (20):
* TLSv1.2 (IN), TLS handshake, Finished (20):
* SSL connection using TLSv1.2 / ECDHE-RSA-AES256-GCM-SHA384
* ALPN, server accepted to use http/1.1
* Server certificate:
*  subject: CN=projects.gw-computing.net
*  start date: Nov  9 18:29:01 2020 GMT
*  expire date: Feb  7 18:29:01 2021 GMT
*  subjectAltName: host "projects.gw-computing.net" matched cert's "projects.gw-computing.net"
*  issuer: C=US; O=Let's Encrypt; CN=Let's Encrypt Authority X3
*  SSL certificate verify ok.
> GET /projects/dfc HTTP/1.1
> Host: projects.gw-computing.net
> User-Agent: curl/7.74.0
> Accept: */*
>
* Mark bundle as not supporting multiuse
< HTTP/1.1 502 Bad Gateway
< Server: nginx
< Date: Fri, 25 Dec 2020 08:58:45 GMT
< Content-Type: text/html; charset=UTF-8
< Content-Length: 150
< Connection: keep-alive
<
<html>
<head><title>502 Bad Gateway</title></head>
<body>
<center><h1>502 Bad Gateway</h1></center>
<hr><center>nginx</center>
</body>
</html>
rolinh / dfc

Project homepage seems broken #28
