Warning package.json: No license field $ TARGET_ENV='dev' gatsby develop

Question

Iam trying learn Typescript and iam using public repo to start with it. github repo: https://github.com/tahowallet/taho.xyz

when I run yarn start I got this warning

$ yarn start
yarn run v1.22.22
warning ..\..\..\package.json: No license field
$ TARGET_ENV='dev' gatsby develop
'TARGET_ENV' is not recognized as an internal or external command,
operable program or batch file.
error Command failed with exit code 1.

The package.json contains the following:

  "scripts": {
    "develop": "TARGET_ENV='dev' gatsby develop",
    "start": "TARGET_ENV='dev' gatsby develop",
    "start:stg": "TARGET_ENV='stg' gatsby develop",
    "start:prd": "TARGET_ENV='prd' gatsby develop",
    "build": "TARGET_ENV='dev' gatsby build",
    "build:stg": "TARGET_ENV='stg' gatsby build",
    "build:prd": "TARGET_ENV='prd' gatsby build",
    "serve": "gatsby serve",
    "clean": "gatsby clean",
    "format": "prettier --write \"**/*.{js,jsx,ts,tsx,json,md}\""
  }

The directory is organised in the following way: enter image description here

try learn to run this code