I am making a toDoList App in angular using firebase and angularfire2. When I run the application and check the console, it gives me the following error:

[2018-04-25T20:10:00.090Z] @firebase/firestore: Firestore (4.13.0): The behavior for Date objects stored in Firestore is going to change AND YOUR APP MAY BREAK. To hide this warning and ensure your app does not break, you need to add the following code to your app before calling any other Cloud Firestore methods:

const firestore = firebase.firestore(); const settings = {/ your settings... / timestampsInSnapshots: true}; firestore.settings(settings);

With this change, timestamps stored in Cloud Firestore will be read back as Firebase Timestamp objects instead of as system Date objects. So you will also need to update code expecting a Date to instead expect a Timestamp. For example:

// Old: const date = snapshot.get('created_at'); // New: const timestamp = snapshot.get('created_at'); const date = timestamp.toDate();

Please audit all existing usages of Date when you enable the new behavior. In a future release, the behavior will change to the new behavior, so if you do not follow these steps, YOUR APP MAY BREAK.

I am not having any troubles retrieving the data from the firebase firestore collection.

How do I fix this error and also why does this error occur in the first place?