A TimThumb error has occured

The following error(s) occured:

The remote file is not a valid image. Mimetype = ''E:\Website\Dvbcn\wp-content\themes\skin\cache\timDD17.tmp

Query String : src=https%3A%2F%2Fimage.c114.com.cn%2F1%28579
TimThumb version : 2.8.13