Found Nginx 1.19.0 stopped but no idea what happened

[Evald80]

hello,

There is not too much 1GB. No, i did not disabled mode_sec.

The list of loaded modules:
load_module modules/ngx_http_brotli_filter_module.so;
load_module modules/ngx_http_brotli_static_module.so;
load_module modules/ngx_http_modsecurity_module.so;
load_module modules/ngx_http_geoip2_module.so;

this is an issue that suddenly started to come out. There always has been
this config and software installed. 
I think some kind of requests are causing this but does not know if it is a
module or nginx itself.

Can i troubleshoot it? I mean, when the issue will pop up again, try to
gather some info? if yes, how?

Posted at Nginx Forum: https://forum.nginx.org/read.php?2,288511,288531#msg-288531