Wrong filename called on line 13

Took me few minutes to find the issue ... 

Css was not showing. So i look in my error_log and found this!

 File does not exist: /var/www/wet-boew/theme-gcwu-fegc/css/ie8-wet-boew.css, referer: **********/index-en.php
[Wed Mar 19 11:57:27 2014] [error] [client *************] File does not exist: /var/www/wet-boew/theme-gcwu-fegc/css/ie8-wet-boew.css, referer: **************/index-en.php
[Wed Mar 19 11:57:27 2014] [error] [client **************] File does not exist: /var/www/wet-boew/theme-gcwu-fegc/assets/header-leaf.jpg), url(http:, referer: **************/index-en.php