A possible workaround, which was successful for me:
1. Uninstall distro-info 0.0.0 Python package via pip.
2. Install/reinstall distro-info package from Ubuntu repos.

After these two steps, I was able to continue with my upgrade.

I still have no idea how the distro-info Python package got installed in
my Ubuntu 19.04. Also, why is it's version 0.0.0.

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https://bugs.launchpad.net/bugs/1848829

Title:
  upgrade from 19.04 to 19.10 fails due to issues with distro-info

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