A TimThumb error has occured

The following error(s) occured:

The remote file is not a valid image. Mimetype = 'text/html' File = /var/www/html/timthumb/cache/timthumbPC53By

Query String : w=200&h=230&zc=1&a=c&src=http://www.torinofilmfest.org/public/uploaded/R_ITD_FATTI-CORSARI_Testone.jpg
TimThumb version : 2.8.13