Fresco Stopped Allowing Me to Upload Photos

I started using Fresco in December and immediately enjoyed the resources the program provides. It's a whole lot better than the previous app I used, so that's why this problem confuses me. As of today, I tried to upload an image onto a blank canvas to draw, as I always do, and it wouldn't work. The app lets me view my photo library and select a photo, but when I press it, it does not upload.

I tried to delete the app and re-download it, but the problem was not fixed. I also tried to upload older images, as I thought it was because the image I originally tried to upload was new. Yet, it does not work. I changed permissions and tried again, but to no avail. It does the same thing when I try to upload an image onto a canvas I've already drawn on.

Anyone know what I should do?