I recently installed the Media player indicator
extension and all the extensions are blocked. I cannot enable the ones that have been disabled earlier. I also tried to disable one of those which were enabled and restarted using Alt + F2 + R and when I started Advanced settings
that extension was unable to start along the others.
Please see the output of running gnome-tweak-tool
in a terminal here.
Best Answer
Problem solved.
Thanks to: askubuntu
and
ubuntu forums
follow the links for instructions