[phpBB Debug] PHP Warning: in file /var/www/vhosts/appmeier.eu/httpdocs/inc/page_header.php on line 42: mysqli_real_escape_string() expects parameter 2 to be string, array given

Fatal error: Call to undefined method phpbb\db\driver\factory::mysqli_query() in /var/www/vhosts/appmeier.eu/httpdocs/inc/page_header.php on line 57