trying to create chrome extension but manifest.json not working

so basically, I have build a small game using javascript and trying to create a chrome extension. This is my first time not sure what I am doing wrong in the manifest.json.

I have got multiple folder, 3 folders for images. Not sure what is wrong here.

{
  "manifest_version": 3,
  "name": "DICE CAR RACE",
  "version": "1.0",
  "description": "CLICK THE DICE AND MOVE THE CAR",
  "browser_action": {
    "default_icon": "icon.png",
    "default_popup": "index.html"
  },
  "permissions": [
    "activeTab"
  ],
  "web_accessible_resources": [{
    "resources" : ["diceImg/dice1.jpeg",
    "diceImg/dice2.jpeg",
    "diceImg/dice3.jpeg",
    "diceImg/dice4.jpeg",
    "diceImg/dice5.jpeg",
    "diceImg/dice6.jpeg",
    "cars/car1.jpeg",
    "cars/car2.jpeg",
    "cars/car3.jpeg",
    "cars/car4.jpeg",
    "cars/car5.jpeg",
    "cars/car6.jpeg",
    "racecourse/racetrack.jpeg"],
    "matches": ["<all_urls>"]}
]
}