Cen't Edit Products Anymore (Empty Fields)

[lukx]

I have no idea what happend but suddenly I can't edit products (it's empty fields). The product is visible on site and on product list but when I try to edit nothing. I'm getting empty fields in other things also all over back office. I think it started to happen when I added another language. How to fix it?

 

Edited March 10, 2016 by lukx (see edit history)

[Vipul Hadiya]

Can you explain how did you installed another language? Because if your store have more than one language then there must be language switch button at each translatable fields like Name, Link, SEO fields but i can't see it in your screenshot. Also try to remove that installed second language please.

[lukx]

I used: import language pack ( right now I have to languaes (English and Polish)

 

 

[lukx]

those empty fields are now almost everywhere: 

 

[lukx]

[lukx]

After deleting extra language the fields come back but when trying to edit and save something Im getting this error:

 

[Vipul Hadiya]

I'm not sure but if i trust my Prestashop knowledge then you must have any hard coded module which have improper JS which can be cause of the problem. Can you check the console if there is any JS error?

You can see console by pressing F12 in chrome.