manifest icons Line 1 not , column: 1, Unexpected token

Question

manifest icons Line 1 not , column: 1, Unexpected token. This seems to be an old question here in stackflow. But I can't get any mentioned solutions to work.

{
     "name": "slangoApp",
     "icons": [
      {
       "src": "\/android-icon-36x36.png",
       "sizes": "36x36",
       "type": "image\/png",
       "density": "0.75"
      },
      {
       "src": "\/android-icon-48x48.png",
       "sizes": "48x48",
       "type": "image\/png",
       "density": "1.0"
      },
      {
       "src": "\/android-icon-72x72.png",
       "sizes": "72x72",
       "type": "image\/png",
       "density": "1.5"
      },
      {
       "src": "\/android-icon-96x96.png",
       "sizes": "96x96",
       "type": "image\/png",
       "density": "2.0"
      },
      {
       "src": "\/android-icon-144x144.png",
       "sizes": "144x144",
       "type": "image\/png",
       "density": "3.0"
      },
      {
       "src": "\/android-icon-192x192.png",
       "sizes": "192x192",
       "type": "image\/png",
       "density": "4.0"
      }
     ]
    }

The json validates will in validators, but i keep getting this error. What can be the problem?

Answer 1

manifest.json should be present in a directory where your index.html is present. Not in any other directory. If you are using react its possible that you might have misplaced it in src directory.

Answer 2

It's because the browser does not understand the MIME type of the manifest file and thus cannot find it. In Chrome DevTools > Network > Headers > Content-Type, the content-type of the manifest must match the actual manifest file extension (.json or .webmanifest).

In ASP.NET, you need to declare the file type in web.config:

<staticContent>
  <mimeMap fileExtension=".json" mimeType="application/json" />
  <mimeMap fileExtension=".webmanifest" mimeType="application/manifest+json" />
</staticContent>

Answer 3

This "name": "slangoApp", shoulb be like this "name": "slangoapp", Please remember it should not contain uppercase letters of spaces.