Flux error, i installed flux from ppa repository.

[ipansubastian]

Traceback (most recent call last):
File "/usr/bin/fluxgui", line 17, in
from fluxgui.fluxapp import main
File "/usr/lib/python3/dist-packages/fluxgui/fluxapp.py", line 4, in
from fluxgui import fluxcontroller, settings
File "/usr/lib/python3/dist-packages/fluxgui/fluxcontroller.py", line 1, in
from fluxgui import xfluxcontroller
File "/usr/lib/python3/dist-packages/fluxgui/xfluxcontroller.py", line 1, in
import pexpect
File "/usr/lib/python3/dist-packages/pexpect/init.py", line 75, in
from .pty_spawn import spawn, spawnu
File "/usr/lib/python3/dist-packages/pexpect/pty_spawn.py", line 14, in
from .spawnbase import SpawnBase
File "/usr/lib/python3/dist-packages/pexpect/spawnbase.py", line 224
def expect(self, pattern, timeout=-1, searchwindowsize=-1, async=False):
^
SyntaxError: invalid syntax