'blowfish_secret' uses an arbitrary string as the encrypted string of the cookie. If there is no encryption key, the system will display "The configuration file now requires a top-secret phrase password (blowfish_secret)". The configuration is as follows:
vi phpmyadmin/config.inc. php
$cfg['Servers'][$i]['auth_type'] = 'cookie';
$cfg['blowfish_secret'] = 'sakia'; (The "sakia" is customized)
?>
After modification, it will be much more convenient to log in to phpmyadmin in the future, but be sure not to use an empty password, remember!