"Error while checking for upgrades" on Tails 5.15.1
Several users reported this on whisperback (i.e. wb:4b2e9b23f3e7a1589aca9e8f4fe42ef8
). I verified this is true.
In fact, there is no https://tails.net/upgrade/v2/Tails/5.15.1/amd64/stable/upgrades.yml
This might have been the result of a badly-done emergency release.