Why did jack picture appear in the photo at end of movie shining?

There is no evidence from within the film _The Shining_ (directed by Stanley Kubrick and adapted from the work of Stephen King) that indicates any appearance of Jack at the end of the film.

If this question references any fan theories concerning an apparition of Nicholson within the photograph featured during the final seconds of the film, those notions remain speculative and ultimately baseless in the larger canon of the piece.