Unable To Update Settings Prestashop 1.7 (SOLVED) 2018

I start using prestashop month ago, i try to save my product after doing a lot of combination, its fine for the first time but not when you want to edit. After some research i find a solution. Here we go, hope you guys find what your looking for.

I using Hostgator hosting

First, find PHP Selector in your cPanel, under SOFTWARE categories.

Change your PHP version to PHP 7, I change mine to PHP 7.1 . Try to refresh your prestashop website, try edit your product, the Unable To Update Settings now is gone and the combination shows up.

Ok thats all, easy right. Hope you guys solved it too. Peace yo