Open config.inc.php file and add this code after /* Authentication type */

$cfg['Servers'][$i]['user'] = 'USERNAME';
$cfg['Servers'][$i]['password'] = 'PASSWORD'; //Enter your MySql Password
$cfg['Servers'][$i]['auth_type'] = 'config';

and remove this line

$cfg['Servers'][$i]['auth_type'] = 'cookie';

it’s done.