i have 502 error

I have 502 error on my site nginx + php-fmt error looks like : connect() to unix:/var/run/php/php7.0-fpm.sock failed can you help me?

  1. Have you ensured PHP7.0 is installed and running

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Hey friend,

Make sure that PHP-FPM is running. If you’ve installed that version, then this should start it:

systemctl start php7.0-fpm

This should also return something to show that it is installed:

find /etc/systemd -name "*fpm*"

If that returns another version, like say php7.2-fpm, then you need to adjust the start command above, as well as your Nginx config to reference php7.2-fpm.sock.