مشکل در صفحه اول نصب

[ahmad_ism]

سلام دوستان
من در اول نصب به پیغام خطای زیر برخورد می کنم لطفا راهنمایی کنید
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Warning: session_start() [function.session-start]: Cannot send session cookie - headers already sent by (output started at /home/parniang/public_html/libraries/joomla/session/session.php:423) in /home/parniang/public_html/libraries/joomla/session/session.php on line 423

Warning: session_start() [function.session-start]: Cannot send session cache limiter - headers already sent (output started at /home/parniang/public_html/libraries/joomla/session/session.php:423) in /home/parniang/public_html/libraries/joomla/session/session.php on line 423

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و

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Warning: session_write_close() [function.session-write-close]: Failed to write session data (files). Please verify that the current setting of session.save_path is correct (/tmp) in /home/parniang/public_html/libraries/joomla/session/session.php on line 562