Ошибка после установки:

Warning: session_start(): Cannot send session cookie - headers already sent by (output started at /usr/home/httpd/site/www/configuration.php:1) in /usr/home/httpd/site/www/libraries/joomla/session/session.php on line 407 Warning: session_start(): Cannot send session cache limiter - headers already sent (output started at /usr/home/httpd/site/www/configuration.php:1) in /usr/home/httpd/site/www/libraries/joomla/session/session.php on line 407 Warning: Cannot modify header information - headers already sent by (output started at /usr/home/httpd/site/www/configuration.php:1) in /usr/home/httpd/site/www/libraries/joomla/session/session.php on line 410

Что  делать?

Начало файла configuration.php должно быть такое:

<?php

Пробел или пустая строка (как и все другие символы) перед кодом недопустимо!