Machine Learning in Elixir B1, page 55. cannot open image

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@seanmor5

I want to invert the cat image. Therefore I downloaded the file in the same folder as the livemd file for chapter 03 I created.
I use the code:


"Cat.jpg"
 |> StbImage.read_file!()
 |> StbImage.resize(256, 256)
 |> Nx.dot(invert_color_channels)
 |> Nx.as_type({:u, 8})
 |> Kino.Image.new()

returns:

** (ArgumentError) could not open file
(stb_image 0.6.2) lib/stb_image.ex:247: StbImage.read_file!/2
/path_to_folder/ch03_harness_the_power_of_math.livemd#cell:4r2dpa25qaotbzseednwllnwqlrrvd6l:8: (file)

Hope you can help me out here.