DejaDup keeps prompting for encryption password and will not accept it
What Went Wrong?
I installed DejaDup on Pop!_OS 20.04 just prior to updating to 21.10. The install and initial backup went fine. However, since upgrading to 21.10 (it was immediately after the initial backup was made, so there was only one backup done on 20.04), it attempts to do the automatic backup and asks me for the encryption password. I provide it, but it doesn't accept it and keeps asking for it.
Debug Information
(go to the About menu item, where you'll either see a System tab or a Debug Information button, and copy the text copy here)
There is no apparent "About" menu.