Expo Bare Build Error

Hello Guys, I need your help…

i am using
expo: “~37.0.3”
react-native: “~0.61.5”

I am working on bare expo project but when i tried to create signed apk i get this error

How i can make apk of bareflow?

Are you running the react-native packager? I think you will need to do a yarn start where the start script runs react-native start.