My Pinter made a hissing noise when I added the Hopper, is that normal?

You may hear a hiss coming from the hopper inlet when using the hopper, this is completely normal and nothing to worry about at all. It is simply excess pressure being released.

My Bag ${ cartTotalItems } ${ cartTotalItems !== 1 ? 'items' : 'item' }
There isn't anything in your bag yet.
  Your order is in the bag
Sub-total ${ moneyFormat(cartData.total_price) }