MQTT plugin errors

[takezo]

Hi,

im trying to use the mqtt plugins but seems that I'm having issues starting the service:

Code:

Ignoring exception while loading the mqtt_zones plug-in.
from __future__ imports must occur at the beginning of the file (mqtt_zones.py, line 8)
Ignoring exception while loading the mqtt_slave plug-in.
from __future__ imports must occur at the beginning of the file (mqtt_slave.py, line 8)
MQTT publish UP
Ignoring exception while loading the mqtt_schedule plug-in.
from __future__ imports must occur at the beginning of the file (mqtt_schedule.py, line 8)
plugins loaded:
  mobile_app
  mqtt
  plugin_manager
  relay_board
  system_update
Starting timing loop

http://:::80/

i have running version version: 4.0.27.

Any help?, thanks1