phpmyadmin Existing configuration file (./config.inc.php) is not readable

Encountered this problem in the morning.

At first glance it looks like a permission issue, but after checking the file I realized that the file is empty, and there is a config.sample.inc.php that has full content.

Removing config.inc.php and renamed config.sample.inc.php to config.inc.php fixes the problem

Credits to https://forums.freebsd.org/threads/solved-apache-php-phpmyadmin-not-working-problem.45920/