You will need to have modified the dbus configuration file to open the permissions for 'ukBaz.bluezero'. This is covered in the System Setup section of the documentation
A peripheral application will be registered on the DBus using the bus name of ukBaz.bluezero. An example dbus configuration file is provided and will need to be copied to the correct location:
Should be removed following notes? :
at: Peripheral
at: https://github.com/ukBaz/python-bluezero/blob/main/docs/install_bluez.rst#creating-a-bluezero-peripheral