Main process exited, code=exited, status=226/NAMESPACE - Failed to start Bluetooth service

Error like:

systemd[1]: Starting Bluetooth service...
systemd[5839]: bluetooth.service: Failed to set up mount namespacing: /run/systemd/unit-root/var/lib/bluetooth: No such file or directory
systemd[5839]: bluetooth.service: Failed at step NAMESPACE spawning /usr/libexec/bluetooth/bluetoothd: No such file or directory
systemd[1]: bluetooth.service: Main process exited, code=exited, status=226/NAMESPACE
systemd[1]: bluetooth.service: Failed with result 'exit-code'.

systemd[1]: Failed to start Bluetooth service. 

Fix:

1. sudo install -dm700 /var/lib/bluetooth
2. sudo systemctl start bluetooth (or) sudo service bluetooth start
3. sudo systemctl status bluetooth (or) sudo service bluetooth status