Warning: mysqli::__construct(): php_network_getaddresses: getaddrinfo for your_mysql_server failed: Temporary failure in name resolution in /var/www/html/index.php on line 8

Fatal error: Uncaught mysqli_sql_exception: php_network_getaddresses: getaddrinfo for your_mysql_server failed: Temporary failure in name resolution in /var/www/html/index.php:8 Stack trace: #0 /var/www/html/index.php(8): mysqli->__construct('your_mysql_serv...', 'your_mysql_user...', Object(SensitiveParameterValue), 'your_database_n...') #1 {main} thrown in /var/www/html/index.php on line 8