A TimThumb error has occured

The following error(s) occured:

The remote file is not a valid image. Mimetype = ''/home/tehmusic/public_html/wp-content/cache/timthumbnnj2cfl7s8j85IMcYAv

Query String : src=http://dl.teh-music.com/Music/Album/Sami Yusuf - Barakah/Sami Yusuf - Barakah.jpg&h=340&w=340&zc=0
TimThumb version : 2.8.13