A TimThumb error has occured

The following error(s) occured:

Could not find the internal image you specified.

Query String : src=/upload/resize_cache/iblock/79d/800_600_1f88da2b4740de19584cdff1727090349/79d97b17d79a87ee580da18fe6e6f8d0.jpg&w=373&h=373&zc=2
TimThumb version : 2.8.11