Why does the configured virtual host display the content of the directory one level up instead of the site?

Question

Apache HTTP Server

I have an Ubuntu 14.04 VM in VirtualBox. I set up a host for the project on Silex, the settings are completely basic. But at first there was a problem with the fact that when opening the address, the default Apache page was opened, and now, when opening the address, the listing of the directory is opened one level higher (/var/www, and the site is in /var/www/site.local). When you open a "folder" with a project in this listing, you get a url like site.local/site.local and silex throws a 404 error. What could be the reason?
UPD: Apache config is here

Answer 1

in that it is necessary to attach the apache config)

Answer 2

DocumentRoot is invalid

Answer 3

I figured it out: you need to use directives not of the form NameVirtualHost karusel.local:80 and VirtualHost karusel.local:80, but substitute *:80 instead.