Continuity mistake: The scene is where Duncan is sitting across from Ralph trying to convince him that he's the king. It's a taco stand or something. At the start of the scene you see a bottle of Tabasco sauce on the table. In the next view, the bottle is gone and Ralph gets up to get a bottle of Tabasco sauce from the counter.
Continuity mistake: There's a scene near the start where Duncan is sitting across from Ralph at a street food van. There are two plastic cups of fizzy drink on the table. The one nearest Ralph is initial tilted, as if something is under one side of the base. Part way through the conversation, without anyone touching it, it straightens up.