I cant edit my checkout page because there is an error

I have the dawn theme installed and I havnt customized anything yet.

But when I want to access the checkout page, I am redirected to the homepage. In my console I see the following error:

Can somebody help me out…because Im stuck now.

Problem solved, you get this error when there aren’t any products available

I am getting the same message and I have a product listed.

Are those product also published?