I am trying to create a dataset and train as per the below trailhead topic(https://trailhead.salesforce.com/content/learn/projects/build-a-cat-rescue-app-that-recognizes-cat-breeds/cat-recognition-app-create-train-dataset)
I have created a new folder with other images and trying to upload those images from Files, Documents & Static Resource in salesforce, but all getting failed with "Invalid file format" issue.
All of the images in that folder are in "PNG" format.
Please advise.