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/S10-4-65W-Starter--TL-36-40-58W-Floresan-icin---S10-4-65W-SIN-220-240V-BL-LIS-12X25--resim-6393.webp&w=500&h=500&zc=
TimThumb version : 2.8.14