Fatal error: Uncaught Error: Call to undefined function mysql_connect() in /volume1/web/poradenstvi-pro-pozustale/wp-includes/wp-db.php on line 1564

Error: Call to undefined function mysql_connect() in /volume1/web/poradenstvi-pro-pozustale/wp-includes/wp-db.php on line 1564

Call Stack:
    0.0001     359496   1. {main}() /volume1/web/poradenstvi-pro-pozustale/index.php:0
    0.0002     359912   2. require('/volume1/web/poradenstvi-pro-pozustale/wp-blog-header.php') /volume1/web/poradenstvi-pro-pozustale/index.php:17
    0.0002     360456   3. require_once('/volume1/web/poradenstvi-pro-pozustale/wp-load.php') /volume1/web/poradenstvi-pro-pozustale/wp-blog-header.php:13
    0.0002     361344   4. require_once('/volume1/web/poradenstvi-pro-pozustale/wp-config.php') /volume1/web/poradenstvi-pro-pozustale/wp-load.php:37
    0.0003     362680   5. require_once('/volume1/web/poradenstvi-pro-pozustale/wp-settings.php') /volume1/web/poradenstvi-pro-pozustale/wp-config.php:80
    0.0018     550840   6. require_wp_db() /volume1/web/poradenstvi-pro-pozustale/wp-settings.php:106
    0.0018     552384   7. wpdb->__construct($dbuser = 'pozustali', $dbpassword = 'Es*9377_1234', $dbname = 'pozustali', $dbhost = '127.0.0.1:3307') /volume1/web/poradenstvi-pro-pozustale/wp-includes/load.php:404
    0.0019     553176   8. wpdb->db_connect($allow_bail = ???) /volume1/web/poradenstvi-pro-pozustale/wp-includes/wp-db.php:592