پیغامهای خطا بعد از restore کردن بک آپ

سلام،

من بک آپ سایتم رو از روی یک سرور دیگه به یک سرور جدید منتقل و restore کردم. توی صفحه اصلی مشکلی ندارم ولی وقتی به بخش مدیریت میرم پیغامهای زیر در بالا و پایین صفحه میاد:

بالای صفحه:

Warning: session_start() [function.session-start]: open(/tmp/sess_85436c7ad56d98800ebc12406c5d7971, O_RDWR) failed: Permission denied (13) in /home/yekshahr/public_html/includes/mambofunc.php on line 574

Warning: session_start() [function.session-start]: Cannot send session cache limiter - headers already sent (output started at /home/yekshahr/public_html/includes/mambofunc.php:574) in /home/yekshahr/public_html/includes/mambofunc.php on line 574

Warning: session_regenerate_id() [function.session-regenerate-id]: Cannot regenerate session id - headers already sent in /home/yekshahr/public_html/includes/mambofunc.php on line 576

Warning: Cannot modify header information - headers already sent by (output started at /home/yekshahr/public_html/includes/mambofunc.php:574) in /home/yekshahr/public_html/mambots/editors/mostlyce.php on line 76

Warning: Cannot modify header information - headers already sent by (output started at /home/yekshahr/public_html/includes/mambofunc.php:574) in /home/yekshahr/public_html/mambots/editors/mostlyce.php on

پایین صفحه:
Warning: Unknown: open(/tmp/sess_85436c7ad56d98800ebc12406c5d7971, O_RDWR) failed: Permission denied (13) in Unknown on line 0

Warning: Unknown: Failed to write session data (files). Please verify that the current setting of session.save_path is correct () in Unknown on line 0