Can’t connect to Bluetooth

When I tried to connect my headset to Linux it is telling that:
Connection Failed: No audio endpoints registered

The Bluetooth service is up and running

? bluetooth.service - Bluetooth service
     Loaded: loaded (/lib/systemd/system/bluetooth.service; enabled; vendor preset: disabled)
     Active: active (running) since Mon 2021-11-08 18:37:13 IST; 28min ago
       Docs: man:bluetoothd(
   Main PID: 894 (bluetoothd)
     Status: "Running"
      Tasks: 1 (limit: 2142)
     Memory: ...