router example throws exception about no-framework-tutorial HOT 2 OPEN

I wonder if this is what he meant to say but never did.

"Comment out this code until next step"

foreach ($response->getHeaders() as $header) {
    header($header, false);
}
echo $response->getContent();

from no-framework-tutorial.

I'm confused and lost between step 5 and 6.
What am I supposed to see after implementing all code from step5?
The 404 page message still? Because that's what I get.....
I doubt it's supposed to be like this.

from no-framework-tutorial.