Traceback (most recent call last):
  File "/usr/share/system-config-printer/system-config-printer.py", line 1173, in on_btnApply_clicked
    err = self.apply()
  File "/usr/share/system-config-printer/system-config-printer.py", line 1184, in apply
    return self.save_serversettings()
  File "/usr/share/system-config-printer/system-config-printer.py", line 2075, in save_serversettings
    setting_dict = self.server_settings.copy()
AttributeError: GUI instance has no attribute 'server_settings'