I downloaded it and indeed doesn't load in LFS. Not sure if Illustrator being a vector graphics editor have something to do with it, which I doubt, but you never know ¯\_(ツ)_/¯
But then I copied the image instead of saving it, pasted it in paint.net, saved as jpg and it worked. Maybe try using a different image editor (preferably a raster editor e.g. paint.net, Photoshop, GIMP, etc etc) and see if it works?