These dependencies were not found:

* date-fns in ./node_modules/formol/src/async/CalendarField.jsx, ./node_modules/formol/src/async/CalendarFieldLocales.js
* date-fns/locale/fr in ./node_modules/formol/src/async/CalendarFieldLocales.js

To install them, you can run: npm install --save date-fns date-fns/locale/fr