Help with getting CDN link from image ID (roproxy)

I needed to get the CDN link (ex: example link) of an image using it’s ID, but for some reason in Roblox when I sent a GET request to roproxy, the CDN link I got back was just blank.

(I did test with image ID’s and still got the same result)
part2 (the “imageUrl” is supposed to be like, but it’s just and nothing else).
Does anyone have a fix for this?
NOTE: Actually going to the roproxy URL with the image ID put in, it does give me the CDN link, it only doesn’t give me it in game.