Why doesnt the onLoad event get fires in react native fast image

Question

<FastImage
    style={{
      width: isImageLoaded ? "100%" : 0,
      height: isImageLoaded ? 400 : 0,
      borderRadius: 10,
      display: isImageLoaded ? "flex" : "none",
    }}
    source={{
      uri: photoData?.imgUrl,
      priority: FastImage.priority.normal,
    }}
    resizeMode="cover"
    onLoadEnd={() => setIsImageLoaded(true)}
/>

this is my code