Warning: session_write_close() [function.session-write-close]: write failed: No space left on device (28) in R:\farm\web\libraries\joomla\session\session.php on line 545

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 (c:/php_session) in R:\farm\web\libraries\joomla\session\session.php on line 545