Warning: mysqli_connect(): (HY000/1045): Access denied for user 'catalogo'@'95.174.9.189' (using password: YES) in /var/www/vhosts/libreriadelledonne.it/httpdocs/wp-content/themes/libreriadelledonne/catalogo.php on line 14

Warning: mysqli_error() expects parameter 1 to be mysqli, bool given in /var/www/vhosts/libreriadelledonne.it/httpdocs/wp-content/themes/libreriadelledonne/catalogo.php on line 14
I cannot connect to the database because: