Warning: mysqli_connect(): Error while reading greeting packet. PID=158582 in /var/www/html/itf/cerca.php on line 311

Warning: mysqli_connect(): (HY000/2006): MySQL server has gone away in /var/www/html/itf/cerca.php on line 311

Fatal error: Uncaught TypeError: mysqli_set_charset(): Argument #1 ($mysql) must be of type mysqli, bool given in /var/www/html/itf/cerca.php:313 Stack trace: #0 /var/www/html/itf/cerca.php(313): mysqli_set_charset() #1 {main} thrown in /var/www/html/itf/cerca.php on line 313