“A watch configured to watch the following paths failed to start” while running ionic-lab

I am getting this error/warning when I run ionic lab

[07:14:54]  watch failed: A watch configured to watch the following paths failed to start. It likely that a file
            referenced does not exist: 
            C:\Dev\ionic2-project\src\assets\**\*,
            C:\Dev\ionic2-project\src\index.html,
            C:\Dev\ionic2-project\src\manifest.json,
            C:\Dev\ionic2-project\src\service-worker.js,
            C:\Dev\ionic2-project\node_modules\ionicons\dist\fonts\**\*,
            C:\Dev\ionic2-project\node_modules\ionic-angular\fonts\**\*,
            C:\Dev\ionic2-project\node_modules\ionic-angular\polyfills\polyfills.js,
            C:\Dev\ionic2-project\node_modules\sw-toolbox\sw-toolbox.js

ionic lab still runs and I can debug on browser.

From those Files listed, the only file not present in my project is service-worker.js. I tried to do what the only other question I found says and removed all node_modules but it didn’t work.

This is my current package.json

{
  "name": "ionic2",
  "author": "",
  "homepage": "",
  "private": true,
  "scripts": {
    "clean": "ionic-app-scripts clean",
    "build": "ionic-app-scripts build",
    "ionic:build": "ionic-app-scripts build",
    "ionic:serve": "ionic-app-scripts serve",
    "test": "ng test"
  },
  "dependencies": {
    "@angular/common": "2.4.8",
    "@angular/compiler": "2.4.8",
    "@angular/compiler-cli": "2.4.8",
    "@angular/core": "2.4.8",
    "@angular/forms": "2.4.8",
    "@angular/http": "2.4.8",
    "@angular/platform-browser": "2.4.8",
    "@angular/platform-browser-dynamic": "2.4.8",
    "@angular/platform-server": "2.4.8",
    "@ionic/storage": "1.1.9",
    "ionic-angular": "2.1.0",
    "ionic-native": "2.5.1",
    "ionicons": "3.0.0",
    "rxjs": "5.2.0",
    "sw-toolbox": "3.6.0",
    "zone.js": "0.7.7"
  },
  "devDependencies": {
    "@ionic/app-scripts": "1.1.4",
    "@types/jasmine": "^2.5.42",
    "@types/node": "^7.0.5",
    "angular-cli": "^1.0.0-beta.28.3",
    "codecov": "^1.0.1",
    "gulp": "^3.9.1",
    "gulp-tslint": "^7.1.0",
    "gulp-watch": "^4.3.11",
    "jasmine-core": "^2.5.2",
    "jasmine-spec-reporter": "^3.2.0",
    "karma": "^1.4.1",
    "karma-chrome-launcher": "^2.0.0",
    "karma-jasmine": "^1.1.0",
    "karma-mocha-reporter": "^2.2.2",
    "karma-remap-istanbul": "^0.6.0",
    "ts-node": "^2.1.0",
    "tslint": "^4.4.2",
    "tslint-eslint-rules": "^3.3.0",
    "typescript": "2.2.1"
  },
  "cordovaPlugins": [
    "cordova-plugin-whitelist",
    "cordova-plugin-console",
    "cordova-plugin-statusbar",
    "cordova-plugin-device",
    "cordova-plugin-splashscreen",
    "ionic-plugin-keyboard"
  ],
  "cordovaPlatforms": [],
  "description": "Ionic2 project"
}

I have tried and got the same result with:

{
  "name": "Ionic2",
  "author": "",
  "homepage": "",
  "private": true,
  "scripts": {
    "clean": "ionic-app-scripts clean",
    "build": "ionic-app-scripts build",
    "ionic:build": "ionic-app-scripts build",
    "ionic:serve": "ionic-app-scripts serve",
    "test": "ng test"
  },
  "dependencies": {
    "@angular/common": "2.2.1",
    "@angular/compiler": "2.2.1",
    "@angular/compiler-cli": "2.2.1",
    "@angular/core": "2.2.1",
    "@angular/forms": "2.2.1",
    "@angular/http": "2.2.1",
    "@angular/platform-browser": "2.2.1",
    "@angular/platform-browser-dynamic": "2.2.1",
    "@angular/platform-server": "2.2.1",
    "@ionic/storage": "1.1.7",
    "ionic-angular": "2.0.1",
    "ionic-native": "2.4.1",
    "ionicons": "3.0.0",
    "rxjs": "5.0.0-beta.12",
    "sw-toolbox": "3.4.0",
    "zone.js": "0.6.26"
  },
  "devDependencies": {
    "@ionic/app-scripts": "1.0.0",
    "@types/jasmine": "^2.5.42",
    "@types/node": "^7.0.5",
    "angular-cli": "^1.0.0-beta.28.3",
    "codecov": "^1.0.1",
    "gulp": "^3.9.1",
    "gulp-tslint": "^7.1.0",
    "gulp-watch": "^4.3.11",
    "jasmine-core": "^2.5.2",
    "jasmine-spec-reporter": "^3.2.0",
    "karma": "^1.4.1",
    "karma-chrome-launcher": "^2.0.0",
    "karma-jasmine": "^1.1.0",
    "karma-mocha-reporter": "^2.2.2",
    "karma-remap-istanbul": "^0.6.0",
    "ts-node": "^2.1.0",
    "tslint": "^4.4.2",
    "tslint-eslint-rules": "^3.3.0",
    "typescript": "2.0.9"
  },
  "cordovaPlugins": [
    "cordova-plugin-whitelist",
    "cordova-plugin-console",
    "cordova-plugin-statusbar",
    "cordova-plugin-device",
    "cordova-plugin-splashscreen",
    "ionic-plugin-keyboard"
  ],
  "cordovaPlatforms": [],
  "description": "Ionic2 Project"
}