When I chose settings from taskbar menu nothings happened. I have been working a while ago, last think that I did was removing ~/.pulse directory and run pulseaudio -k and pulseaudio --start (from this thred - No sound after update to ubuntu 17.10).

I can see error in logs when I click setting button (journalctl /usr/bin/gnome-shell -f -o cat):

JS ERROR: TypeError: app is null

Reinstall the Gnome Control Center using :

sudo apt install --reinstall gnome-control-center
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  • Perfect! Worked on 18.04 – Mad Man Jul 2 '18 at 16:40

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