Здравствуйте уважаемые мастера.
Движком пользуюсь впервые,поэтому не могу никак устранить ошибку.
Пробую для начала установить движок на локальный сервер,но на втором шаге после выбора языка пишем мне это
Requirements problem
The following error must be resolved before you can continue the installation process:
The Drupal installer requires that you create a settings file as part of the installation process.
Copy the ./sites/default/default.settings.php file to ./sites/default/settings.php.
Change file permissions so that it is writable by the web server. If you are unsure how to grant file permissions, please consult the on-line handbook.
More details about installing Drupal are available in INSTALL.txt.
The following installation warning should be carefully reviewed:
Operations on Unicode strings are emulated on a best-effort basis. Install the PHP mbstring extension for improved Unicode support. (Currently using Unicode library Standard PHP)

Please check the error messages and try again.
Что за причина можете подсказать.