PHP Warning: touch(): Unable to create file /var/log/plesk/panel.log because Permission denied;

Hi,

OS: Centos 5.5


I just upgraded my plesk to 12.5.30, I can log into my account and see my data but when I want to create/edit something, I get this error:

ERROR: Uncaught exception 'Zend_Log_Exception' with message '"/var/log/plesk/panel.log" cannot be opened with mode "a"' in /usr/local/psa/admin/externals/Zend/Log/Writer/Stream.php:81 Stack trace: #0 /usr/local/psa/admin/plib/Plesk/Log.php(69): Zend_Log_Writer_Stream->__construct('/var/log/plesk/...') #1...

PHP Warning: touch(): Unable to create file /var/log/plesk/panel.log because Permission denied;