Other mistake: Towards the end, Chewbacca and Beckett have walked some distance from the landed yacht. They come up a small slope and are faced with Han, waiting for them. But an aerial shot shows that slope is very short and just runs down to a cliff. There's no way they could have got to the base of the slope to walk up it in the first place.
Beckett: Let me give you some advice. Assume everyone will betray you. And you will never be disappointed.
Han Solo: Since when do you know how to fly? [Chewie howls.] 190 years old? [Chewie howls again.] You look great!