Bonjour à tous,
Quelques détails supplémentaires : https://www.joommasters.com/index.php/blog/tutorials-and-case-studies/how-to-fix-security-bug-of-slider-security-breach-of-theme.html
About foreach error, that mean 1 module has no data for showing when call foreach, you can check again that module configuration in backend
Then enable debug mode for checking why you have error 500
Hi friend
1. maybe it is PHP version problem, what is your PHP version on server
2. you only have problem when change template or have same problem with default theme of Prestashop ?
Hi friend
your problem maybe because country Restrictions, you can go to Shipping=> Preferences or Payment=> Preferences for checking configuration again
if you only update 1.7.x, I think there is no problem as well, a good theme will work fine with all versions what not have major update (like from 1.7 to 1.8)