Warning: mysqli_connect(): php_network_getaddresses: getaddrinfo for sky-rds-prod.cfqepeetobpw.us-east-1.rds.amazonaws.com failed: Name or service not known in /var/www/html/inc/mysql.php on line 4

Fatal error: Uncaught mysqli_sql_exception: php_network_getaddresses: getaddrinfo for sky-rds-prod.cfqepeetobpw.us-east-1.rds.amazonaws.com failed: Name or service not known in /var/www/html/inc/mysql.php:4 Stack trace: #0 /var/www/html/inc/mysql.php(4): mysqli_connect() #1 /var/www/html/inc/init.php(7): connectDB() #2 /var/www/html/inc/autoload.php(7): include_once('...') #3 /var/www/html/index.php(1): include('...') #4 {main} thrown in /var/www/html/inc/mysql.php on line 4