Revealing mistake: When Chewy puts his hand on Han's shoulder at the end, Joonas Suotamo's finger is visible through the fur.
Other mistake: Apparently, the route to Kessel is the same no matter from which direction or part of the galaxy someone needs to get there.
Visible crew/equipment: Near the end, the camera and a boom mic are reflected in a helmet of one of Vos' henchmen when he gets knocked down by Enfys.
Answer: I was wondering about this, too. C-3PO did not appear in Solo, and I cannot find any Internet reference pertaining to R2-D2 being in it. Curiously, Anthony Daniels, the actor who has played C-3PO in all the other Star Wars movies, makes a cameo appearance in Solo as another character (Chewbacca's friend).
raywest ★