Warning: mysqli::__construct(): php_network_getaddresses: getaddrinfo for mysql failed: Temporary failure in name resolution in /var/www/engine/config_db.php on line 10

Fatal error: Uncaught mysqli_sql_exception: php_network_getaddresses: getaddrinfo for mysql failed: Temporary failure in name resolution in /var/www/engine/config_db.php:10 Stack trace: #0 /var/www/engine/config_db.php(10): mysqli->__construct('mysql', 'root', Object(SensitiveParameterValue), 'bifos') #1 /var/www/engine/processing.php(12): include('/var/www/engine...') #2 /var/www/index.php(4): include('/var/www/engine...') #3 {main} thrown in /var/www/engine/config_db.php on line 10