title: My Flutter/Firebase app is showing no app has been configured yet
body: <p>I am making an app in Flutter/Firebase and I am experiencing the following error on my visual studio code terminal:-</p>
  <pre><code>Xcode build done.                                           522.2s
  6.26.0 - [Firebase/Core][I-COR000005] No app has been configured yet.
  6.26.0 - [Firebase/Messaging][I-FCM001000] FIRMessaging Remote Notifications 
  proxy enabled, will swizzle remote notification receiver handlers. If you'd 
  prefer to manually integrate Firebase Messaging, add 
  &quot;FirebaseAppDelegateProxyEnabled&quot; to your Info.plist, and set it to NO. Follow 
  the instructions at:
  https://firebase.google.com/docs/cloud- 
  messaging/ios/client#method_swizzling_in_firebase_messaging
  to ensure proper integration.
  Waiting for iPhone 11 to report its views...                         9ms
  Syncing files to device iPhone 11...                               610ms
  </code></pre>
  <p>any ideas on how to solve this issue......????</p>