You have some broken packages:
https://launchpadlibrarian.net/369595119/VarLogDistupgradeAptlog.txt
and you have installed non ubuntu genuine packages (seen some from
debian for example); so the first step is to made your install a pure
ubuntu one, and downgrade version when required.
Otherwise optin for a fresh install.
** Changed in: ubuntu-release-upgrader (Ubuntu)
Status: New => Incomplete
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https://bugs.launchpad.net/bugs/1770311
Title:
18.04 upgrade not working
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