502 Bad Gateway nginx/1.10.3 (Ubuntu) after migrating Wordpress from another hosting
I am trying to run my Wordpress based website after migration from another hosting.
Last time I did it it worked well but after my last successful migration I updated to Ubuntu 16.04.3.
Now I have 502 Bad Gateway nginx/1.10.3 (Ubuntu).
I tried to check log file /var/log/nginx/error.log — this file is empty 😕
I tried some advises from another threads (restarting nginx and php5-fpm) — it doesn't help.
Please give me any advise how to find out the reason.