Hostname 'www.<my-domain>.com' already has externally managed DNS records

{
  "$schema": "node_modules/wrangler/config-schema.json",
  "name": "project-name",
  "main": "./dist/_worker.js/index.js",
  // Update to today's date
  "compatibility_date": "2025-03-25",
  "compatibility_flags": ["nodejs_compat"],
  "assets": {
    "binding": "ASSETS",
    "directory": "./dist"
  },
  "observability": {
    "enabled": true
  },
  "vars": {},
  "hyperdrive": [
    {
      "binding": "HYPERDRIVE",
      "id": <hyperdrive-id>,
      "localConnectionString": <local-connection-string>
    }
  ],
  "routes": [
    {
      "pattern": "www.<my-domain>.com",
      "custom_domain": true
    }
  ]
}