php server config error on techbase.kde.org

[Ralf Habacker]

Hi,
 
I tried to upload a png image (100 kB) . After the upload an empty page 
with the following text appears.

*Fatal error*: Allowed memory size of 20971520 bytes exhausted (tried to 
allocate 131072 bytes) in 
*/home/wikis/public/mediawiki_src/includes/BagOStuff.php* on line *407*
 

Regards
Ralf