When I want to sign in Xbox I click the button and it crashes my whole game

When I want to sign in Xbox from the main, I click the button for connexion.

The windows open et then it crashes my whole game.

I saw the ticket MCPE-20548. no workaround works. (i don't find the .json stoage.xml in the repertory)

Can you help me? I bought the game for playing with my friends and it's not possible.

I only can play solo mode.

Thanks