/usr/lib/python2.7/dist-packages/trytond/modules/sale_price_list/locale/es_ES.po is in tryton-modules-sale-price-list 2.2.0-1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/python2.7/dist-packages/trytond/modules/sale_price_list/locale/../../../../../../../share/pyshared/trytond/modules/sale_price_list/locale/es_ES.po