ValueError: unknown locale: my_MM

[Sithu Thwin]

When I click Phatch icons in Application list, it do not come up. So I try to run from terminal. When I run phatch command in terminal, I got following error message -

$ phatch
Traceback (most recent call last):
  File "/usr/bin/phatch", line 16, in <module>
    main(config_paths, app_file = __file__)
  File "/usr/share/phatch/phatch/app.py", line 203, in main
    from core.settings import create_settings
  File "/usr/share/phatch/phatch/core/settings.py", line 23, in <module>
    from pil import IMAGE_READ_EXTENSIONS
  File "/usr/share/phatch/phatch/core/pil.py", line 38, in <module>
    from lib import metadata
  File "/usr/share/phatch/phatch/lib/metadata.py", line 46, in <module>
    from metadataTest import DateTime, INFO_TEST, is_string, MONTHS, now, WEEKDAYS
  File "/usr/share/phatch/phatch/lib/metadataTest.py", line 789, in <module>
    'Exif_GPSInfo_GPSDateStamp': DateTime('2009:06:21 23:06:40'),
  File "/usr/share/phatch/phatch/lib/metadataTest.py", line 66, in __init__
    self.from_exif_string(source)
  File "/usr/share/phatch/phatch/lib/metadataTest.py", line 95, in from_exif_string
    self.datetime = d.strptime(exif_string, self.format)
  File "/usr/lib/python2.7/_strptime.py", line 270, in <module>
    _TimeRE_cache = TimeRE()
  File "/usr/lib/python2.7/_strptime.py", line 188, in __init__
    self.locale_time = LocaleTime()
  File "/usr/lib/python2.7/_strptime.py", line 70, in __init__
    self.lang = _getlang()
  File "/usr/lib/python2.7/_strptime.py", line 29, in _getlang
    return locale.getlocale(locale.LC_TIME)
  File "/usr/lib/python2.7/locale.py", line 562, in getlocale
    return _parse_localename(localename)
  File "/usr/lib/python2.7/locale.py", line 475, in _parse_localename
    raise ValueError, 'unknown locale: %s' % localename
ValueError: unknown locale: my_MM