A TimThumb error has occured

The following error(s) occured:


Query String : src=http://www.waarismijnknuffel.nl/media/catalog/product/cache/1/thumbnail/9df78eab33525d08d6e5fb8d27136e95/1/_/1_e8b88f81957d4f5eb7214e0966b318c9.jpg&h=500&w=500&zc=1
TimThumb version : 2.8.14