Continuity mistake: When Louis and Charlie are on the plane, Louis finds the money and knocks on the bathroom door 2 times. The first time, you see his hand move and hit the door. The second time you can see that neither of his hands move.
Suggested correction: You state that his hand doesn't move for the second knock but He is knocking at waist or below waist level at the bottom for the second knock. You can't see it but that is what is happening. There is no mistake.
Continuity mistake: In the scene where Jessie shows up in the desert to rescue Charlie and Lewis, she is riding on one camel, when they leave in the morning there are three. Where did the other two camels come from?
Suggested correction: They end up in another camp/location where she has everything set up. So the other camels would have stayed whilst she took one and just happened to come across Louis and Charlie.