Warnings in logfile

Hi!

I found a lot of 404’s errors in logfile – seems that there is a file missing?

​/wp-content​/plugins​/facebook-members​/css​/images​/ui-bg_flat_75_ffffff_40x100.png

Now the question – is there a way to prevent these 404’s error messages?

Thanks in advance and greetings from Germany,
Joerg

http://wordpress.org/plugins/facebook-members/