Trello count time Power-Up 🚀
Instructions
You need to serve that app to use on your trello boards, for that there is a node script server.js on the project root you could run that using:
npm run start
That will only work for local tests to use on trello you need to use a host like AWS, digital ocean, heroku, etc.
After that you need to access that page to enable custom power up on trello: