*** This bug is a duplicate of bug 1611737 ***
https://bugs.launchpad.net/bugs/1611737
This is not a duplicate issue of bug #1611737 (ROS packages). It is not
even presenting the same error message. It is a libappstream issue.
I was able to find the resolution here:
*** This bug is a duplicate of bug 1611737 ***
https://bugs.launchpad.net/bugs/1611737
** This bug has been marked a duplicate of bug 1611737
Can't upgrade from a release if ros packages are installed from ROS servers
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** Tags added: xenial2bionic
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https://bugs.launchpad.net/bugs/1767626
Title:
cannot upgrade to bionic beaver 18.04 lts
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Some ppas are used, so the packages version/naming cant be recognised to
do the upgrade: downgrade them first , then try again to upgrade.
** Changed in: ubuntu-release-upgrader (Ubuntu)
Status: New => Incomplete
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