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# Turn on debug mode in Nginx

To turn on debug mode in Nginx, please update Nginx config file `/etc/nginx/conf-enabled/log.conf` (Linux/OpenBSD) or `/usr/local/etc/nginx/conf-enabled/log.conf` (FreeBSD), append string `debug` in parameter `error_log` like below:

    error_log ... debug;

Then restart Nginx service.

Nginx logs detailed debug info to `/var/log/nginx/error.log` (Linux/FreeBSD) or `/var/www/logs/error.log` (OpenBSD).