Warning: mysqli_connect(): php_network_getaddresses: getaddrinfo failed: Temporary failure in name resolution in /var/www/html/inc/class/mysql.php on line 40

Warning: mysqli_connect(): (HY000/2002): php_network_getaddresses: getaddrinfo failed: Temporary failure in name resolution in /var/www/html/inc/class/mysql.php on line 40
2002: php_network_getaddresses: getaddrinfo failed: Temporary failure in name resolution
Warning: mysqli_close() expects parameter 1 to be mysqli, bool given in /var/www/html/inc/class/mysql.php on line 17