openfoodfacts | Demo Elassandra Python | Data Manipulation library

I have a problem with Retrofit. I am working on an Android app which needs to get information about a product from Open Food Facts API. I tried with Retrofit, I created a class with the information I want from JSON (I only need a few fields and I didn't want to make a class with all the JSON fields, because there are over 50 I think)

My df contains product names and corresponding information. Relevant here is the name and country sold to:

I have a probleme when I use json.stringify, it returns me a json with a colon after the json

total beginner here trying to learn Python using Automate The Boring Stuff.

As practice, I am trying to create a program that will search a website for a given food item, and identify if a specific ingredient is contained in that food item's ingredients. The website I am using to search is https://world.openfoodfacts.org/.

What I would like to do is take input from the user and then input that into the website's search bar. I am able to identify the search bar element using selenium, however when I try to input it, I get the following error:

I'm fairly new to decoding from a JSON file.

My question is, how do I decode to find this: "product_name_en": "Coca Cola"(there's a lot more to that file, but not the node)

My struct is set up as:

I am trying to parse from the below Google Custom Search API call the fields "og:image" and "og:title" of the "metatags" array. I honestly do not know how this is possible to be done as I cannot find any resources online. I need to retrieve this information as I need to display the contents of the fields in my app. If it is not possible to parse only the "metatags" array how can it be done for the whole API? Thank you