Hi guys!
I've created one-page-checkout following instructions from this article

And I've found a few problems:

1. There is a fake action used in example #8697

And it was said, that we take config from ShopBundle/Resources/config/routing/checkout.yml and only remove routing connected with sylius_shop_checkout_select_shipping, so this is an error

2. Fatal error at complete step

Even if I change route of complete step to sylius.controller.order:updateAction, I get Fatal error when trying to save order after being completed

It is thrown because there is no check, if I have set customer (and I haven't)