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/a8d/504_549_1f88da2b4740de19584cdff1727090349/a8dd58cd1c3800c85217fa9359f9effe.jpeg&w=373&h=373&zc=2
TimThumb version : 2.8.11