Symfony + NGINX = upstream sent too big header while reading response header from upstream

Question

Attempt to open Symfony web application in browser ends with 502 error. NGINX log contains error for this -- upstream sent too big header while reading response header from upstream. According to many advices did the following changes in nginx.conf in http context:

fastcgi_buffers 16 4k;
fastcgi_busy_buffers_size 60k;

NGINX configuration file for Symfony web application looks like adviced in official documentation:

server {
  listen 80;
  listen [::]:80;
  server_name neuro3.vbulash.site;

  root /usr/share/nginx/html/neuro3/public;
  index index.html index.php;

  charset utf-8;

  location = /favicon.ico {
    access_log off; log_not_found off;
  }

  location = /robots.txt {
    access_log off; log_not_found off;
  }

  access_log off;

  location / {
    try_files $uri $uri/ /index.php?$query_string;
  }

  error_page 404 /index.php;

  location ~ \.php$ {
    fastcgi_pass unix:/var/run/php/php8.2-fpm.sock;
    fastcgi_split_path_info ^(.+\.php)(/.*)$;
    include fastcgi_params;
    fastcgi_param SCRIPT_FILENAME $realpath_root$fastcgi_script_name;
    fastcgi_param DOCUMENT_ROOT $realpath_root;
    internal;
  }

  error_log /var/log/nginx/neuro3.vbulash.site.error.log;
}

It works for Laravel, but produces the error "upstream sent too big header while reading response header from upstream" for Symfony. How to fix this?