Error: Destination path '/content/data/subject/first_image.jpg' already exists

[lgrkvst]

If a user for some reason needs to rerun Dreambooth > Setting up, uploaded images will collide.

I guess there needs to be...

os.path.exists('/content/data/subject'):
    !rm -r /content/data/subject

in there somewhere...

[TheLastBen]

If the instance images are the same, you don't need to reupload them, just skip the uploading process