Warning: mysqli_connect(): php_network_getaddresses: getaddrinfo for db failed: Temporary failure in name resolution in /var/www/html/paintmag/missionvacation/common/include/connect.php on line 11

Fatal error: Uncaught mysqli_sql_exception: php_network_getaddresses: getaddrinfo for db failed: Temporary failure in name resolution in /var/www/html/paintmag/missionvacation/common/include/connect.php:11 Stack trace: #0 /var/www/html/paintmag/missionvacation/common/include/connect.php(11): mysqli_connect() #1 /var/www/html/paintmag/missionvacation/include/common_includes.php(40): require_once('...') #2 /var/www/html/paintmag/missionvacation/register_mvc.php(5): require_once('...') #3 {main} thrown in /var/www/html/paintmag/missionvacation/common/include/connect.php on line 11