Ok thank you, the problem with the cart disappeared but the initial problem is not solved.
Please look at this page, it has to be like this :
https://piecesauto-accessoires.com/categorie-produit/barres-de-toit/alfa-romeo1638610226/
And after updating Porto it looks like this :
https://test.piecesauto-accessoires.com/categorie-produit/barres-de-toit/alfa-romeo1638610226/
it seems that we loose the model, the layout or whatelse ? Anyway, we loose the STOCK information, the stars rating, the layout of this presentation… That is the problem