Try this and should work:
Quick fix by installing:
gir1.2-appindicator3-0.1 gir1.2-notify-0.7
From here: https://bugs.launchpad.net/caffeine/+bug/889705
Try this and should work:
Quick fix by installing:
gir1.2- appindicator3- 0.1
gir1.2-notify-0.7
From here: https:/ /bugs.launchpad .net/caffeine/ +bug/889705