Some error regarding shutil function

i was trying cnn on my own using the dataset provided in video and one error is coming which i am not abe to solve

https://colab.research.google.com/drive/1IIkQEY9DZR7GjN7Eu6x0iTz4BWM2zh3i

this is the link of my code

Does the ‘cats’ folder which has been specified in the destination exist?

yes because when i print src and dest it is showing the results

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