Thread:Project:Support desk/Problem with Upload Files (2)/reply (2)

I try this, and returned this error:

Warning: wfMkdirParents: failed to mkdir "/var/www/wiki/mediawiki-1.21.3/images/temp/9/9a" mode 0777 i/var/www/wiki/mediawiki-1.21.3/Includes/GlobalFunctions.php on line 2582 The permissions are the problem?