blueman-manager not starting

Bluetooth was not working on my Ubuntu 20.04. So after reading some other answers on this forum and installing some packages, when I run blueman-manager it doesn't start and gives the this error.

The output of command $ sudo /etc/init.d/bluetooth status -

bluetooth.service - Bluetooth service
     Loaded: loaded (/lib/systemd/system/bluetooth.service; enabled; vendor preset: enabled)
     Active: inactive (dead)
       Docs: man:bluetoothd(8)

And for command $sudo rfkill list -

0: phy0: Wireless LAN
    Soft blocked: no
    Hard blocked: no

How can I make Bluetooth work properly in my system?

First see bluetooth.service status;

$ sudo systemctl status bluetooth

bluetooth.service - Bluetooth service
 Loaded: loaded (/lib/systemd/system/bluetooth.service; disabled; preset: disabled)
 Active: inactive (dead)
   Docs: man:bluetoothd(8)

If the terminal shows that, you need to do this;

$ sudo systemctl enable bluetooth && sudo systemctl start bluetooth

And done!

Make sure Bluetooth is enabled on your system.

systemctl status blueman.service

If it's not running, you can start it with:

sudo systemctl start blueman.service

You can also reset blueman.

rm -rf ~/.config/blueman
sudo systemctl restart blueman.service

If none of the above solutions works, try reinstalling Blueman. You can do this with the following command:

sudo apt-get install --reinstall blueman

Hope this might help.