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\tim5C55.tmp

Query String : src=https://www.asiaott.net/uploadfile/2021/0428/20210428040343247.png&h=124&w=218&zc=1
TimThumb version : 2.8.13