1
1 go to the directory where I installed Joomla.
2 find configuration.php file
3 change access level for this file to 755: it is necessary for the changes to remain
4 open it and Change next lines to:
var $log_path = './logs';
var $tmp_path = './tmp';
5 than save it.

and it worked
اینو امتحان کن ببین کارمی کنه