When i use php setrawcookie function getting server error

Question

I am facing strange issue, When I use setrawcookie function, I got error 502,

setrawcookie("PVEAuthCookie", $vncproxy['ticket'], 0, "/",'mydomain.com', true);

It's throw me 502 Bad Gateway nginx/1.11.5 error.

I have PHP Version 5.6.40, Cookie settings,

Thanks in advance for your help.

Answer 1

I found the issue, It was from nginx

41014 upstream sent too big header while reading response header from upstream,

I update proxy buffering configuration and its works,

proxy_buffer_size 128k;
proxy_buffers 4 256k;
proxy_busy_buffers_size 256k;

Thanks @Barmar