I have problem with upgrading my symfony cmf aplication. My composer looks like: http://pastebin.com/yhm6QVGx
after successful composer update I have css error like on 
You can notice that request is /static/bundles/sonataadmin/bootstrap/...
but there is no folder called bootstrap

also when I click on this file in network tab - there are no content:

(source: scaleengine.net) 
below is full http header description:

What Should I do to continue my work?
 
     
    