locale.Error: unsupported locale setting

(process:1130): Gtk-WARNING **: Locale not supported by C library.
	Using the fallback 'C' locale.
** Message: pygobject_register_sinkfunc is deprecated (AwnOverlay)
Traceback (most recent call last):
  File "/usr/bin/awn-settings", line 53, in <module>
    from awnClass import awnPreferences, awnManager, awnLauncher, awnApplet, awnThemeCustomize, awnTaskManager
  File "/usr/share/avant-window-navigator/awn-settings/awnClass.py", line 62, in <module>
    defs.i18nize(globals())
  File "/usr/share/avant-window-navigator/awn-settings/awnDefs.py", line 127, in i18nize
    locale.setlocale(locale.LC_ALL, '')
  File "/usr/lib/python2.7/locale.py", line 531, in setlocale
    return _setlocale(category, locale)
locale.Error: unsupported locale setting

(process:1209): Gtk-WARNING **: Locale not supported by C library.
	Using the fallback 'C' locale.
** Message: pygobject_register_sinkfunc is deprecated (AwnOverlay)
Traceback (most recent call last):
  File "/usr/bin/awn-settings", line 53, in <module>
    from awnClass import awnPreferences, awnManager, awnLauncher, awnApplet, awnThemeCustomize, awnTaskManager
  File "/usr/share/avant-window-navigator/awn-settings/awnClass.py", line 62, in <module>
    defs.i18nize(globals())
  File "/usr/share/avant-window-navigator/awn-settings/awnDefs.py", line 127, in i18nize
    locale.setlocale(locale.LC_ALL, '')
  File "/usr/lib/python2.7/locale.py", line 531, in setlocale
    return _setlocale(category, locale)
locale.Error: unsupported locale setting

(process:1158): Gtk-WARNING **: Locale not supported by C library.
	Using the fallback 'C' locale.
** (gedit:1158): WARNING **: Error loading plugin: libhspell.so.0: cannot open shared object file: No such file or directory
** (gedit:1158): DEBUG: gtk-menubar.vala:47: map called

LOCALE="uk_UA.UTF-8"
HARDWARECLOCK="localtime"
TIMEZONE=Europe/Kiev
KEYMAP=uk
CONSOLEFONT=
CONSOLEMAP=
USECOLOR="yes"

$ locale -a

locale -a
locale: Cannot set LC_CTYPE to default locale: No such file or directory
locale: Cannot set LC_MESSAGES to default locale: No such file or directory
locale: Cannot set LC_COLLATE to default locale: No such file or directory
C
POSIX
en_US
en_US.iso88591
en_US.utf8