Although I agree they need someone working on continuity, in this instance I don't think there was any error. Luke was picking boxes up from Java to take to Noah to use in packing. He didn't have them when he walked into Java because he was getting them from Jave to take back to Noah's place to pack stuff. I haven't gone back to view the video again, but from memory I think there was also a box in his hand when he left Jave the first time in that episode, but I could be wrong about that part. Anyway, I'd rather believe the "picking the box up from Java" angle than believe that the show's director/others are really that stupid, haha.

 out of  found this valuable. Do you find this valuable?