I think this happens when a snap is in a phased update cycle, the metadata is updated, but the actual snap is only available to a (slowly raising) certain percentage of users … the error message could probably be better phrased and indicate this …
Sorry, @ogra I think you misunderstood my message. I’m not getting this when installing a snap, I’m getting this when creating a snap. Has the destructive-mode been deprecated or phased out or something? I was using it and I’m still getting this error (note: I’m not sure if removing the use of destructive-mode, snapcraft would work, so this is just a hint of what might be going wrong).