{
  "name": "NextSimpleStarter",
  "version": "1.0.0",
  "main": "index.js",
  "repository": {},
  "license": "MIT",
  "dependencies": {
    "express": "^4.14.0",
    "next": "2.0.0-beta.29",
    "next-redux-wrapper": "^1.0.0",
    "react": "^15.4.2",
    "react-dom": "^15.4.2",
    "react-redux": "^5.0.2",
    "redux": "^3.6.0"
  },
  "scripts": {
    "dev": "node server",
    "build": "next build",
    "start": "NODE_ENV=production node server"
  },
  "devDependencies": {
    "sw-precache-webpack-plugin": "^0.9.0"
  }
}

{
  "name": "NextSimpleStarter",
  "version": "1.0.0",
  "repository": {},
  "license": "MIT",
  "dependencies": {
    "express": "^4.14.0",
    "next": "2.0.0-beta.29",
    "next-redux-wrapper": "^1.0.0",
    "react": "^15.4.2",
    "react-dom": "^15.4.2",
    "react-redux": "^5.0.2",
    "redux": "^3.6.0"
  },
  "scripts": {
    "dev": "node server",
    "build": "next build",
    "start": "NODE_ENV=production node server"
  },
  "devDependencies": {
    "sw-precache-webpack-plugin": "^0.9.0"
  }
}

Update Package.json > remove main field
Update Package.json > remove main field
