Error: yarn start - error Command "start" not found Error: yarn start - error Command "start" not found reactjs reactjs

Error: yarn start - error Command "start" not found


reactjs npm yarnpkg

There is no start command inside the scripts of the package.json file.

"scripts": {  "start": "some command to be run", // you need to add this line  "test": "(eslint lib || true) && jest"}

Maybe you want to run the test command instead - npm test / yarn test?

reactjs npm yarnpkg

Just run 

yarn add react-scripts

reactjs npm yarnpkg

Solved it thanks to the insight of the user: Tsvetan Ganev.

I was trying to run a command that it is not in my scripts. Specifically, yarn start is not in the scripts part of the file package.json.To solve the issue I added the following line in scripts

"start": "webpack-dev-server --mode development",

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