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\timD91E.tmp

Query String : src=https://www.asiaott.net/uploadfile/2020/0910/20200910052545969.png&h=124&w=218&zc=1
TimThumb version : 2.8.13