[zloy-13@localhost ~]$ sudo blueman-manager 
Traceback (most recent call last):
  File "/usr/bin/blueman-manager", line 16, in <module>
    from blueman.main.Manager import Blueman
  File "/usr/lib/python3/site-packages/blueman/main/Manager.py", line 9, in <module>
    from blueman.Functions import *
  File "/usr/lib/python3/site-packages/blueman/Functions.py", line 44, in <module>
    gi.require_version("Gtk", "3.0")
  File "/usr/lib64/python3/site-packages/gi/__init__.py", line 129, in require_version
    raise ValueError('Namespace %s not available for version %s' %
ValueError: Namespace Gtk not available for version 3.0