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 https://tr.rbxcdn.com/blahblahblah, but it’s just https://tr.rbxcdn.com/ 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.