Xcode Build failed,fatal error: module 'firebase_auth' not found @import firebase_auth;

    Doctor summary (to see all details, run flutter doctor -v):[✓] Flutter (Channel stable, v1.17.4, on Mac OS X 10.15.5 19F101, locale en-US)[✓] Android toolchain - develop for Android devices (Android SDK version 29.0.3)[✓] Xcode - develop for iOS and macOS (Xcode 11.5)[✓] Android Studio (version 4.0)[✓] VS Code (version 1.46.1)[!] Connected device    ! No devices available! Doctor found issues in 1 category.

\\\Error Message

     ** BUILD FAILED **Xcode's output:↳    /Users/Razi/Desktop/projects/Sayy/ios/Runner/GeneratedPluginRegistrant.m:10:9: fatal error: module 'firebase_auth' not found    @import firebase_auth;     ~~~~~~~^~~~~~~~~~~~~    1 error generated.    note: Using new build system    note: Building targets in parallel    note: Planning build    note: Constructing build description

I have tried deleting Podfile/Podlock and running pod init/ pod install without success. Also have reviewed the GitHub repo for ios folder. Why is firebase_auth not found?