Firestore Permissions Denied

Authentication was successful, but your database rejected the request. Update your Security Rules in the Firebase Console > Firestore Database > Rules:

rules_version = '2';
service cloud.firestore {
  match /databases/{database}/documents {
    match /artifacts/taskflow/users/{userId}/{document=**} {
      allow read, write: if request.auth != null && request.auth.uid == userId;
    }
  }
}

Publish these exact rules, then refresh this app.