Answers for "FirebaseException ([cloud_firestore/permission-denied] The caller does not have permission to execute the specified operation.)"

FirebaseException ([cloud_firestore/permission-denied] The caller does not have permission to execute the specified operation.)

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