Splash screen and icon is not coming in react native expo app

I have build react native expo app everthing is working fine but splash screen and app icon is not coming.

Here is my app.json:

{
  "expo": {
    "name": "testing",
    "slug": "testing",
    "version": "2.0.0",
    "orientation": "portrait",
    "icon": "./assets/icon.png",
    "userInterfaceStyle": "light",
    "splash": {
      "image": "./assets/splash.png",
      "resizeMode": "contain",
      "backgroundColor": "#ffffff"
    }
  }
}

I have tried to clean cache and also tried to rebuild the project but still not getting the app icon and splash screen.

everything is up-to-date in my project.

Please help me with the solution. I would love to hear responses from your.