when I try upgrade to Ubuntu 18.04 from 16.04 the upgrade software stop and
show the message "There is a unsolve problem, an error occurred while
calculating the update.". After three possible cause are showed:
Upgrade to a pre-release
to run from the pre-release version
Use non-official ubuntu
so how does this issue get fixed??
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https://bugs.launchpad.net/bugs/1786876
Title:
I can't upgrade to Bionic Beaver
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