Warning: mysqli::__construct(): php_network_getaddresses: getaddrinfo failed: Try again in /app/public/db.php on line 10

Fatal error: Uncaught mysqli_sql_exception: php_network_getaddresses: getaddrinfo failed: Try again in /app/public/db.php:10 Stack trace: #0 /app/public/db.php(10): mysqli->__construct('mysql.landing.p...', 'marketing_fd_ru', '9MYxwqAvOMd/jDN...', 'marketing_fd_ru') #1 /app/public/index.php(7): include('/app/public/db....') #2 {main} thrown in /app/public/db.php on line 10