Thread:Project:Support desk/Upload system differences between 1.22.7 and 1.23.0

I am able to upload images on mw 1.22.7 but not on mw 1.23.0

The error on MW: Could not store file "/tmp/phppTiSPZ" at "mwstore://local-backend/local-public/8/85/16.jpg".

And PHP warnings: Warning: popen has been disabled for security reasons in /web/htdocs/xxxxxx/mediawiki23/includes/filebackend/FSFileBackend.php on line 702

Warning: stream_get_contents expects parameter 1 to be resource, null given in /web/htdocs/xxxxxx/mediawiki23/includes/filebackend/FSFileBackend.php on line 709

Warning: fclose expects parameter 1 to be resource, null given in /web/htdocs/xxxxxx/mediawiki23/includes/filebackend/FSFileBackend.php on line 710

Warning: cp '/tmp/phppTiSPZ' '/web/htdocs/xxxxxx/mediawiki23/images/8/85/16.jpg' in /web/htdocs/xxxxxx/mediawiki23/includes/filebackend/FSFileBackend.php on line 282

My version page says: MediaWiki 	1.23.0 PHP 	5.3.28 (cgi-fcgi) MySQL 	5.5.37-35.1-log