Comment 6 for bug 1754345

I have machine in this state now
It does not refresh any snaps or install any new ones
interestingly, when I deleted .snap/auth.json if fixed things half way
now I can install new snap (ubuntu-image), refresh snapcraft snap
but refreshing core and core18 returns again (invalid credentials)
snap version 2.39.3
Ubuntu 18.04.2
What I noticed when I try to refresh, I get pop up window with password request