FileUpload Widget Issue in VS Code .ipynb: 'Upload(6)' Displayed, but data Length Returns 0

I was trying to upload a file using widget.FileUpload() and print the image out. But after uploading 6 images and trying to run the last line in a new cell it returned an error, saying "IndexError: list index out of range"

btn_upload = widgets.FileUpload()
btn_upload


img = PILImage.create(btn_upload.data[-1])

I then tried the line print("Number of uploaded files:", len(btn_upload.data)) expecting "6" as that is the number of files I uploaded, it returned 0 instead.

source https://stackoverflow.com/questions/77643801/fileupload-widget-issue-in-vs-code-ipynb-upload6-displayed-but-data-lengt

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