Hi, im trying to add some products in the Ecommerce module but after adding them to the cart and while validation it show me 404 Error !! "The page you were looking for could not be found; it is possible you have typed the address incorrectly, but it has most probably been removed due to the recent website reorganisation. " Pleeeeease need help

It redirects me to the /shop/transaction/x while online trial redirects me to /shop/confirmation?????????