[Bug 2153473] [NEW] can't upgrade to Ubuntu 26.10

[Guybrush88]

Public bug reported:

When launching update-manager -d, the software recognizes that 26.10 is
available to be installed, but it's not possible, this warning appears:
WARNING:root:file 'stonking.tar.gz.gpg' missing

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


** Tags: dist-upgrade

** Tags added: dist-upgrade

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https://bugs.launchpad.net/bugs/2153473

Title:
  can't upgrade to Ubuntu 26.10

Status in update-manager package in Ubuntu:
  New

Bug description:
  When launching update-manager -d, the software recognizes that 26.10
  is available to be installed, but it's not possible, this warning
  appears: WARNING:root:file 'stonking.tar.gz.gpg' missing

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