The source of the contradiction in the Kripke`s Puzzle

One of the most important issues in the reference section of philosophy of language is the sense of the proper names. Two main figures in this discussion are Friedrich Ludwig Gottlob Frege and John Stuart Mill. Frege has posed several puzzles against Mill view. One of the puzzles is the puzzle of the belief context. the puzzle of the belief context implies that if Mill view of proper names is correct, then the intuitionally true Substitutivity principle in the context of belief is violated. Kripke, a prominent advocate of Millie view, shows the puzzle of the belief context can be reproduced even if Frege view of the sense of the proper names is accepted. David Sosa, a proponent of Fregeview, claims that He has been able to revive Fregepuzzle against Mill, which Kripke believes he was able to neutralize with two similar puzzles. On his opinion, intuitionally true Hermeneutic principle is violated in the context of belief only if Millian view is accepted. In this paper, after explaining Sosa proposal, a concern have been proposed about it.