fixes 500 status code issue https://github.com/openfoodfacts/openfoodfacts-server/issues/69
fixes 500 status code issue https://github.com/openfoodfacts/openfoodfacts-server/issues/69

openfoodfacts/openfoodfacts-server,openfoodfacts/openfoodfacts-server,openfoodfacts/openfoodfacts-server,openfoodfacts/openfoodfacts-server,openfoodfacts/openfoodfacts-server