I/flutter ( 3143): PlatformException(Error performing get, PERMISSION_DENIED: Missing or insufficient permissions., null, null) code example

Example: Uncaught Error in onSnapshot: FirebaseError: Missing or insufficient permissions.

service cloud.firestore {
  match /databases/{database}/documents {
    match /{document=**} {
      allow read;
      allow write: if false;
    }
  }
}