yarn start not working after setup

[threeducks-ace]

This repo is currently on low maintenance. See README for details

Problem

i used yarn to create the slate theme project directory and ran yarn install in the theme root, but after that when I run yarn start I get warning package.json: No license field error Command "start" not found.

this error. Any help?

[drinkmorewaters]

Yarn start destroys our theme now, only yarn deploy or yarn zip will work.