Module '"@angular/fire/auth"' has no exported member 'AngularFireAuth'.ts(2305) . please help me to solve this issue

### Version info

**Angular:**

**Firebase:**

**AngularFire:**

**Other (e.g. Ionic/Cordova, Node, browser, operating system):**

### How to reproduce these conditions

**Failing test unit, Stackblitz demonstrating the problem**

**Steps to set up and reproduce**

**Sample data and security rules**

### Debug output

** Errors in the JavaScript console **

** Output from `firebase.database().enableLogging(true);` **

** Screenshots **

### Expected behavior

### Actual behavior

Begin with the AngularFire developer guide and the @angular/fire/auth import named in the report. Gather the missing Angular, Firebase, and AngularFire versions and a minimal reproduction; no completion criterion can be established until those details show whether this is an API change or a setup problem.

Written by the indexing model from the issue text.