wordpress multisite returns html of 'original' site

[iateadonut]

If I try to set a url to the 'extra' site on a Wordpress multisite installation, this returns the html of the original site.

try {
    $crawler = $scraper->request('GET', $url);
} catch( Exception $e ) {

}

// redirect if necessary
while ( $scraper->getResponse() instanceof RedirectResponse ) {
    $crawler = $scraper->followRedirect();
}

echo $crawler->html();