You can check if a PO file is valid with the following command:

        msgfmt -c -o /dev/null <po file>
      

The following errors were found in easyeffects 's PO files:

source does not specify a priority
gettext: po/zh_Hant/easyeffects.po: can't guess language
gettext: po_news/af/easyeffects.po: can't guess language
gettext: po_news/ar/easyeffects.po: can't guess language
gettext: po_news/cs/easyeffects.po: can't guess language
gettext: po_news/da/easyeffects.po: can't guess language
gettext: po_news/de/easyeffects.po: can't guess language
gettext: po_news/es/easyeffects.po: can't guess language
gettext: po_news/es_CO/easyeffects.po: can't guess language
gettext: po_news/es_MX/easyeffects.po: can't guess language
gettext: po_news/es_VE/easyeffects.po: can't guess language
gettext: po_news/eu/easyeffects.po: can't guess language
gettext: po_news/fa/easyeffects.po: can't guess language
gettext: po_news/fi/easyeffects.po: can't guess language
gettext: po_news/fr_FR/easyeffects.po: can't guess language
gettext: po_news/ga/easyeffects.po: can't guess language
gettext: po_news/gl/easyeffects.po: can't guess language
gettext: po_news/hi/easyeffects.po: can't guess language
gettext: po_news/hr/easyeffects.po: can't guess language
gettext: po_news/hu/easyeffects.po: can't guess language
gettext: po_news/id_ID/easyeffects.po: can't guess language
gettext: po_news/it_IT/easyeffects.po: can't guess language
gettext: po_news/ja/easyeffects.po: can't guess language
gettext: po_news/km/easyeffects.po: can't guess language
gettext: po_news/ko/easyeffects.po: can't guess language
gettext: po_news/nb_NO/easyeffects.po: can't guess language
gettext: po_news/nl/easyeffects.po: can't guess language
gettext: po_news/nn/easyeffects.po: can't guess language
gettext: po_news/pl/easyeffects.po: can't guess language
gettext: po_news/pt/easyeffects.po: can't guess language
gettext: po_news/pt_BR/easyeffects.po: can't guess language
gettext: po_news/ro/easyeffects.po: can't guess language
gettext: po_news/ru/easyeffects.po: can't guess language
gettext: po_news/sk/easyeffects.po: can't guess language
gettext: po_news/sr/easyeffects.po: can't guess language
gettext: po_news/sv/easyeffects.po: can't guess language
gettext: po_news/ta/easyeffects.po: can't guess language
gettext: po_news/th/easyeffects.po: can't guess language
gettext: po_news/tr/easyeffects.po: can't guess language
gettext: po_news/uk/easyeffects.po: can't guess language
gettext: po_news/zh_CN/easyeffects.po: can't guess language
gettext: po_news/zh_Hant/easyeffects.po: can't guess language
      

Please ask the translator (identified by the Last-Translator field in the PO file), the language team (identified by the Language-Team field) or debian-i18n for a fix.