nginx throwing out 404 errors after Ubuntu upgrade

This morning, when I SSHed into my droplet, it said that there was a new version of Ubuntu available, so I decided to upgrade. Everything seemed to go well and I didn’t overwrite any files that were locally modified (like /etc/nginx/sites-available/default).

After the upgrade, when trying to visit my site, I got a 404 error from nginx. I tried restarting nginx, PHP and MySQL, without success. I also tried apt-get update and apt-get update --fix-missing, but also without success.

Any ideas on what might be causing it and how to remediate it?

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Try to uncomment the following lines in /etc/php5/fpm/pool.d/www.conf

listen.owner = www-data = www-data listen.mode = 0660

Then restart php-fpm with sudo service php5-fpm restart

Have you reviewed the error log file for NGINX?

Use the following to check it out: sudo cat /var/log/nginx/error.log