[w3c/manifest] Manifest: property 'src' ignored, URL is invalid. (Issue #1059)

```
Manifest: property 'start_url' ignored, URL is invalid.
Manifest: property 'src' ignored, URL is invalid.
```
I got this two warning in console, but it only appears in when I build, and not in localhost

```js
// _manifest.json_
{
  "short_name": "Quick weather",
  "name": "Weather app PWA",
  "description": "Search the weather for any place of the world quickly",
  "icons": [
    {
      "src": "./images/icon-quick-weather.png",
      "type": "image/png",
      "sizes": "460x460"
    },
    {
      "src": "./images/icon-quick-weather(180x180).png",
      "type": "image/png",
      "sizes": "180x180"
    },
    {
      "src": "./images/icon-quick-weather(512x512).png",
      "type": "image/png",
      "sizes": "512x512"
    }
  ],
  "start_url": ".",
  "display": "standalone",
  "theme_color": "#3399ff",
  "background_color": "#fff"
}
```

**Folder structure**
![image](https://user-images.githubusercontent.com/78445203/198746267-583b7a44-ad68-425b-a6a2-affb790b1470.png)



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