title: Expression implicitly coerced from 'String?' to Any
body: <p>I have some error like this "Expression implicitly coerced from <code>String?</code> to <code>Any</code>" this is my code :</p>
  
  <pre><code>func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -&gt; Bool {
      // Override point for customization after application launch.
  
      FIRApp.configure()
      FIRAuth.auth()?.signIn(withEmail: "myemail@gmail.com", password: "mypassword", completion: { (user, error) in
          if (error != nil) {
              print(user?.email)
          }else {
              print(error?.localizedDescription)
          }
      })
  
      return true
  }
  </code></pre>
  
  <p>Error in this line </p>
  
  <pre><code>print(user?.email)
  </code></pre>
  
  <p>And</p>
  
  <pre><code>print(error?.localizedDescription)
  </code></pre>
  
  <p>Please help me</p>