After you installed phpMyAdmin, you logged into your phpMyAdmin for the first time and see the following error at the bottom:
The configuration file now needs a secret passphrase (blowfish_secret)
To correct this error, you need to add a blowfish secret to the phpMyAdmin’s config file
Step 1: Open phpmyadmin/config.inc.php
Step 2: Find:
$cfg['blowfish_secret'] = ''; /* YOU MUST FILL IN THIS FOR COOKIE AUTH! */
Step 3: Add your blowfish secret, it should look like this
$cfg['blowfish_secret'] = 'jdksheuhekhsuhkeuhkdhk'; /* YOU MUST FILL IN THIS FOR COOKIE AUTH! */
Now, you can log into phpMyAdmin, that error should be gone.