Found the following error in my logs:

Traceback (most recent call last):
File "/data/project/suggestbot/projects/opentask/opentask.py", line 32, in <module>
import pywikibot
File "/shared/pywikipedia/core/pywikibot/__init__.py", line 37, in <module>
from pywikibot import config2 as config
File "/shared/pywikipedia/core/pywikibot/config2.py", line 1090, in <module>
userinterface_lang = getdefaultlocale()[0].split('_')[0]
AttributeError: 'NoneType' object has no attribute 'split'

opentask.py updates the English Wikipedia Community portal's list of open tasks regularly and is run through Tool Labs grid engine. Explicitly setting the locale in the shell script that launches it appears to not trigger this error.

Regards,

Morten