The attempt to bind "/%PUBLIC_URL%/manifest.json" in the workspace failed as this URI is malformed when running on Netlify

Having this error on my website when it goes live but the error is not shown in local:host just for the live build. I cannot seem to find a solution. Help would be great! [the error that is shown when inspecting the website][1] [1]: https://ift.tt/3dSz17f

  "short_name": "TestWeb",
  "name": "TestWeb",
  "description": "Best Place On Earth",
  "icons": [
    {
      "src": "favicon.ico",
      "type": "image/x-icon",
      "sizes": "256x256"
    }
  ],
  "start_url": ".",
  "display": "standalone",
  "theme_color": "#000000",
  "background_color": "#ffffff"
}