GifQuality funciton is fault #20
Description
gif.AddFrame(img1, delay: -1) //is good
gif.AddFrame(img1, delay: -1, quality: GifQuality.Bit8); //output.Pixels[index] = pixelValue; error massge:System.NullReferenceException
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gif.AddFrame(img1, delay: -1) //is good
gif.AddFrame(img1, delay: -1, quality: GifQuality.Bit8); //output.Pixels[index] = pixelValue; error massge:System.NullReferenceException