Retrieving image_url from json server into quizzes

I am building a Quiz app. Initially, the quiz app did not have image_url. But now I want to add some image quizzes. I have also added a key-value pair for the image_url in my JSON object. But I am still unable to retrieve these images into my quiz app.

I am adding my code sandbox here to help you guys understand my problem. There is a db.json file but I am running it on a JSON server to retrieve the data.