ERROR [2] mysqli_fetch_array() expects parameter 1 to be mysqli_result, boolean given
Fatal error in line 33 of file /var/www/vhosts/hotelmarket.it/httpdocs/template_prodotti.php, PHP 5.6.30-0+deb8u1 (Linux)
This is the debug trace

Notice: Array to string conversion in /var/www/vhosts/hotelmarket.it/httpdocs/inc_error_handler.php on line 54

Notice: Array to string conversion in /var/www/vhosts/hotelmarket.it/httpdocs/inc_error_handler.php on line 54

Notice: Array to string conversion in /var/www/vhosts/hotelmarket.it/httpdocs/inc_error_handler.php on line 54

Notice: Array to string conversion in /var/www/vhosts/hotelmarket.it/httpdocs/inc_error_handler.php on line 54

Notice: Array to string conversion in /var/www/vhosts/hotelmarket.it/httpdocs/inc_error_handler.php on line 54

Notice: Array to string conversion in /var/www/vhosts/hotelmarket.it/httpdocs/inc_error_handler.php on line 54