Flask-assets Working Locally But Not On Heroku

I'm working to modify a cookiecutter Flask app. I'm working locally on WIN7 and attempting to deploy to heroku. I'm currently trying to add a datepicker to a page. I've found https

Solution 1:

Try checking your .gitignore, build is often ignored which would exclude your static files here: bower_components/eonasdan-bootstrap-datetimepicker/build/*