Getting 503 Error when trying to fetch images

I followed the code in the book and even ran the solution code but all of my image requests return a 503 error. I checked to make sure that Flickrs api wasn’t down and it showed that everything was ok. I also tested on the older version (Ch 25 version) of my app and those api calls are working fine. Anyone else have this issue? And does anyone know why this is happening/ has a solution?

Unfortunately I don’t have solution for your problem, but my app is also not working after this chapter and I also followed the code from the book.
All I can see is just this guy’s photo, whatever I search for doesn’t change anything.

I spend two days trying to work on solution but I couldn’t manage to solve my problem.