Cant add products in pos

Hello please help, for some reason every time i try to add a product in the pos screen it doesnt add to the list, I already check permision and delete and recreate the pos profile.I havent done any modification to the sistem, im having this issue since version 7.0 and now im version 7.1.20 i know the pos in the is working as spected. If there something im missing?. Thanks in Advance


Can you please demo the issue using GIF animations? Any error message received in the browser’s console when trying to add new Item?

hello thanks for reply. this is what i recived desk.min.js:609 Uncaught TypeError: Cannot read property ‘title_field’ of undefined(…) this hapen every time a click on any product in pos module