I have a registration form within a conference in my indico server (with nearly 100 fields - not sure if this is related). The normal users can submit registration correctly without issues.
When we try to manage the registrants of this form (i.e. accessing /event/13/manage/registration/10/registrations/ ), we get 502 Bad Gateway from nginx.
Upon closer inspection, the nginx error log (/opt/indico/log/nginx/error.log) gives this:
2021/02/23 11:35:04 [error] 27029#0: *5 upstream prematurely closed connection while reading response header from upstream, client: IPADDRESS, server: DOMAIN, request: "GET /event/13/manage/registration/10/registrations/ HTTP/1.1", upstream: "uwsgi://unix:/opt/indico/web/uwsgi.sock:", host: "DOMAIN", referrer: "https://DOMAIN/event/13/manage/registration/10/"
Indico log has logged the request correctly like this:
indico.rh GET /event/13/manage/registration/10/registrations/
But there is no further error reported within indico log.
Is there a way to resolve this issue? or at least to help me debug this further?