A TimThumb error has occured

The following error(s) occured:

The image being resized is not a valid gif, jpg or png.

Query String : src=../images/urunler/Tense-Dijital-Multifonksiyonlu-Flasor-Rolesi-72x72--1sn-99dk-resim-334998.webp&w=500&h=500&zc=
TimThumb version : 2.8.14