INVALID MANIFEST.JSON

SAME PROBLEM EVEN ALREADY CHECKD IT WITH https://manifest-validator.appspot.com/ WHICH RESULTS TO VALID.

@ERROR: Line: 1, column: 1, Unexpected token

@SCOPE : BROWSER.

@FILE NAME: manifest.json

{
 "short_name": "mrBoB",
 "name": "Smart AI application",
 "theme_color": "#424242",
 "display": "browser",
 "icons": [
  {
    "src": "/assets/images/android/logo/logo_1xhdpi.png",
    "type": "image/png",
    "sizes": "48x48"
  },
 {
    "src": "/assets/images/android/logo/logo_1xxhdpi.png",
    "type": "image/png",
    "sizes": "96x96"
 },
 {
    "src": "/assets/images/android/logo/logo_1xxxhdpi.png",
    "type": "image/png",
    "sizes": "192x192"
  }
]
}