Error importing Notify from gi.repository

[gatlinnewhouse]

➜ pavolume volup
/usr/bin/pavolume:30: PyGIWarning: Notify was imported without specifying a version first. Use gi.require_version('Notify', '0.7') before import to ensure that the right version gets loaded.
  from gi.repository import Notify
open(): No such file or directory

[AdamSLevy]

This still persists

[v4ltages]

Ended up with the same issue.
I'm using Dunst as my notification-daemon

[marendowski]

I'm using Dunst as well, but despite this error pavolume works just fine.