[Bug 1627519] [NEW] cannot update

[rosie]

Public bug reported:

'the system was unable to get the prerequisites for the upgrade.'
'distribution upgrade process exited with code 1'

** Affects: update-manager (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1627519

Title:
  cannot update

Status in update-manager package in Ubuntu:
  New

Bug description:
  'the system was unable to get the prerequisites for the upgrade.'
  'distribution upgrade process exited with code 1'

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