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/Parafudr-Kartusu-40kA-C-Sinifi-Ex9Ue2-20-1P-320-M-320-V-Ac-resim-14637.webp&w=500&h=500&zc=
TimThumb version : 2.8.14