warningهای موجود بعد از بالا امدن صفحه اول سایتم(bazarokala.com)

[bazarokala]

سلام
سایتم رو با جوملا ساختم و تو سرور اپلود کردم.حالا که میخوام وارد سایت(bazarokala.com) بشم این ایرادهارو بالای صفحه می نویسه نمیدونم چیکار کنم لطفا کمکم کنید.

Warning: session_start() [function.session-start]: Cannot send session cookie - headers already sent by (output started at /home/bazarokala/domains/bazarokala.com/public_html/configuration.php:1) in /home/bazarokala/domains/bazarokala.com/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/bazarokala/domains/bazarokala.com/public_html/configuration.php:1) in /home/bazarokala/domains/bazarokala.com/public_html/libraries/joomla/session/session.php on line 423

Warning: Cannot modify header information - headers already sent by (output started at /home/bazarokala/domains/bazarokala.com/public_html/configuration.php:1) in /home/bazarokala/domains/bazarokala.com/public_html/libraries/joomla/session/session.php on line 426

Warning: Cannot modify header information - headers already sent by (output started at /home/bazarokala/domains/bazarokala.com/public_html/configuration.php:1) in /home/bazarokala/domains/bazarokala.com/public_html/templates/ja_purity/ja_templatetools.php on line 44

تو صفحه اصلی هم ای ایراد رو می نویسه:

Warning: Cannot modify header information - headers already sent by (output started at /home/bazarokala/domains/bazarokala.com/public_html/configuration.php:1) in /home/bazarokala/domains/bazarokala.com/public_html/administrator/components/com_virtuemart/classes/ps_session.php on line 68