That error is usually caused by a missing / misconfigured sk.. key in your app.{json,config.js,config.ts}'s plugins.

Double check it's properly added to the config plugins:

{
  "expo": {
    "plugins": [
      [
        "@rnmapbox/maps",
        {
          "RNMapboxMapsDownloadToken": "sk.ey.."
        }
      ]
    ]
  }
}

Make sure it has the scope for "DOWNLOADS:READ"

and then rebuild your development client(s)

eas build --profile development --platform android

eas build --profile development-simulator --platform ios