Warning: mysqli::__construct(): php_network_getaddresses: getaddrinfo for db failed: Temporary failure in name resolution in /var/www/weekoff-management/config/db_connection.php on line 7

Fatal error: Uncaught mysqli_sql_exception: php_network_getaddresses: getaddrinfo for db failed: Temporary failure in name resolution in /var/www/weekoff-management/config/db_connection.php:7 Stack trace: #0 /var/www/weekoff-management/config/db_connection.php(7): mysqli->__construct('db', 'webuser', 're$t@!23', 'wk') #1 /var/www/weekoff-management/index.php(3): include('/var/www/weekof...') #2 {main} thrown in /var/www/weekoff-management/config/db_connection.php on line 7