Converting Amazon Books No Longer Works

Hello,

I have the latest version of Calibre and DeDrm plugin.

I've converted many Amazon eBooks to PDF and EPUB in the past.

However, I tried again today and it fails every time (see attached snapshot).

Has something changed?

I looked in all the forums, You Tube videos, etc. to investigate the problem but found no solutions.

Any ideas?

Thanks.

Attached Thumbnails