thank you friends, the solution has almost worked. I had stuck the Bo I fixed it with deleting the / var / cache / content (/ dev and / prod) folders.
to be sure that the file: htacces is perfect, I made it empty inside my hosting space, I loaded and installed prestashop, after I changed only the folders of my prestashop with the new ones (without changing APP and ADMINxxxxx) do not copy local database in hosting space, use that of the new installation and everything works without changing permissions just cancel DEV and PROD.
Now I try to redo the whole sequence to be sure that I have written all the steps with precision.
PS: as I change the title of the post in solved