Hello
First of all, let me introduce myself, my name is Ricardo and I am from Chile and I thank you for your help.
After update to 1.7.6.0 to 1.7.8.8 the same problem when in the cart try to delete o add a product must to refresh the page like others guys
i have tried to do what everyone has shared
1- Copy the core.js from prestashop 1.7.8.8 original and paste the current in themes/core.js ( try to do the same with the version 1.7.6.1) and dowload the core.js shared from @dimtsef
2- Refresh in shopping cart module
3- delete the cache from folder CACHE
4- change friendly urls off like @wzzly said earlier
But continue the error i need to refresh the page to see the change in delete or add product
Please you help and sorry my english
And another issue that there are some css that are not loaded, but first I want to solve this issue that I have been on it for 2 days 
