open_basedir restriction in effect Warning in Backend

Hi there

I'm getting a warning whenever I'm in Backend administrating EasyBlog:

Warning: is_file() [function.is-file]: open_basedir restriction in effect. File(/data/web/e15779/html/Yugioh_blogadministrator/templates/isis/html/com_easyblog/styles/style.css) is not within the allowed path(s): (/data/web/e15779/html/Yugioh_blog:/data/web/e15779/phpsession:/data/web/e15779/phptmp:/tmp:/usr/bin) in /data/web/e15779/html/Yugioh_blog/libraries/joomla/filesystem/file.php on line 564

I know it has something to do with that "open_basedir". But I can't access the "open_basedir" since I'm not the server administrator.

What can I do? This warning looks like it's important, since it has problem with some css-file...

Thanks in advance