Can't open phpMyAdmin

It can be reached in: http://<IP>/phpmyadmin

Errors

The configuration file now needs a secret passphrase (blowfish_secret)

Login to your server over SSH

If you have Centos/Fedora go to:

/var/www/html/phpmyadmin

If you have Debian go to:

/var/www/phpmyadmin

Open file config.inc.php, find line:

$cfg['blowfish_secret'] = ; /* YOU MUST FILL IN THIS FOR COOKIE AUTH! */

And enter any characters between single commas. Example:

$cfg['blowfish_secret'] = 'mun9b8y7tv6cr5ex4'; /* YOU MUST FILL IN THIS FOR COOKIE AUTH! */

Save the file and open phpMyAdmin.