Further investigation reveals that
/usr/lib/locale/eo_XX.utf8
is empty. It shouldn't be. It should contain something similar to:
LC_ADDRESS LC_CTYPE LC_MEASUREMENT LC_MONETARY LC_NUMERIC LC_TELEPHONE LC_COLLATE LC_IDENTIFICATION LC_MESSAGES LC_NAME LC_PAPER LC_TIME
Further investigation reveals that
/usr/lib/ locale/ eo_XX.utf8
is empty. It shouldn't be. It should contain something similar to:
LC_ADDRESS LC_CTYPE LC_MEASUREMENT LC_MONETARY LC_NUMERIC LC_TELEPHONE
LC_COLLATE LC_IDENTIFICATION LC_MESSAGES LC_NAME LC_PAPER LC_TIME