example project does not run!

[ajaygautam]

flutter run fails when executed in the example folder:

agautam@jarvis ~/workspace/flutter/zz_samples/fidelisa-flutter_plusgins/packages/flutter_firebase_ui/example (master) $ flutter run
 
Launching lib/main.dart on iPhone 11 in debug mode...
Warning: Missing build name (CFBundleShortVersionString).
Warning: Missing build number (CFBundleVersion).
Action Required: You must set a build name and number in the pubspec.yaml file version field before submitting to the
App Store.
 
Running pod install...                                              1.3s
CocoaPods' output:
↳
      Preparing

    Analyzing dependencies

    Inspecting targets to integrate
      Using `ARCHS` setting to build architectures of target `Pods-Runner`: (`arm64`)

    Finding Podfile changes
      A google_sign_in_web
      - Flutter
      - firebase_auth
      - firebase_core
      - flutter_facebook_login
      - flutter_twitter_login
      - google_sign_in

    Fetching external sources
    -> Fetching podspec for `Flutter` from `.symlinks/flutter/ios`
    -> Fetching podspec for `firebase_auth` from `.symlinks/plugins/firebase_auth/ios`
    -> Fetching podspec for `firebase_core` from `.symlinks/plugins/firebase_core/ios`
    -> Fetching podspec for `flutter_facebook_login` from `.symlinks/plugins/flutter_facebook_login/ios`
    -> Fetching podspec for `flutter_twitter_login` from `.symlinks/plugins/flutter_twitter_login/ios`
    -> Fetching podspec for `google_sign_in` from `.symlinks/plugins/google_sign_in/ios`
    -> Fetching podspec for `google_sign_in_web` from `.symlinks/plugins/google_sign_in_web/ios`

    Resolving dependencies of `Podfile`
      CDN: trunk Relative path: CocoaPods-version.yml exists! Returning local because checking is only perfomed in
      repo update
      CDN: trunk Relative path: all_pods_versions_0_3_5.txt exists! Returning local because checking is only perfomed
      in repo update
      CDN: trunk Relative path: Specs/0/3/5/Firebase/6.24.0/Firebase.podspec.json exists! Returning local because
      checking is only perfomed in repo update
      CDN: trunk Relative path: Specs/0/3/5/Firebase/5.16.0/Firebase.podspec.json exists! Returning local because
      checking is only perfomed in repo update
      CDN: trunk Relative path: all_pods_versions_b_3_c.txt exists! Returning local because checking is only perfomed
      in repo update
      CDN: trunk Relative path: Specs/b/3/c/FBSDKLoginKit/6.5.2/FBSDKLoginKit.podspec.json exists! Returning local
      because checking is only perfomed in repo update
      CDN: trunk Relative path: all_pods_versions_d_4_0.txt exists! Returning local because checking is only perfomed
      in repo update
      CDN: trunk Relative path: Specs/d/4/0/GoogleSignIn/5.0.2/GoogleSignIn.podspec.json exists! Returning local
      because checking is only perfomed in repo update
      CDN: trunk Relative path: all_pods_versions_b_a_9.txt exists! Returning local because checking is only perfomed
      in repo update
      CDN: trunk Relative path: Specs/b/a/9/TwitterKit/3.4.2/TwitterKit.podspec.json exists! Returning local because
      checking is only perfomed in repo update
      CDN: trunk Relative path: all_pods_versions_a_8_e.txt exists! Returning local because checking is only perfomed
      in repo update
      CDN: trunk Relative path: Specs/a/8/e/TwitterCore/3.2.0/TwitterCore.podspec.json exists! Returning local because
      checking is only perfomed in repo update
      CDN: trunk Relative path: Specs/0/3/5/Firebase/5.19.0/Firebase.podspec.json exists! Returning local because
      checking is only perfomed in repo update
      CDN: trunk Relative path: Specs/0/3/5/Firebase/5.20.0/Firebase.podspec.json exists! Returning local because
      checking is only perfomed in repo update
      CDN: trunk Relative path: Specs/0/3/5/Firebase/5.20.1/Firebase.podspec.json exists! Returning local because
      checking is only perfomed in repo update
      CDN: trunk Relative path: Specs/0/3/5/Firebase/5.20.2/Firebase.podspec.json exists! Returning local because
      checking is only perfomed in repo update
    [!] CocoaPods could not find compatible versions for pod "Firebase/Auth":
      In snapshot (Podfile.lock):
        Firebase/Auth (= 5.16.0)

      In Podfile:
        firebase_auth (from `.symlinks/plugins/firebase_auth/ios`) was resolved to 0.0.1, which depends on
          Firebase/Auth (~> 5.19)


    You have either:
     * out-of-date source repos which you can update with `pod repo update` or with `pod install --repo-update`.
     * changed the constraints of dependency `Firebase/Auth` inside your development pod `firebase_auth`.
       You should run `pod update Firebase/Auth` to apply changes you've made.

    /Library/Ruby/Gems/2.6.0/gems/molinillo-0.6.6/lib/molinillo/resolution.rb:328:in `raise_error_unless_state'
    /Library/Ruby/Gems/2.6.0/gems/molinillo-0.6.6/lib/molinillo/resolution.rb:310:in `block in unwind_for_conflict'
    /Library/Ruby/Gems/2.6.0/gems/molinillo-0.6.6/lib/molinillo/resolution.rb:308:in `tap'
    /Library/Ruby/Gems/2.6.0/gems/molinillo-0.6.6/lib/molinillo/resolution.rb:308:in `unwind_for_conflict'
    /Library/Ruby/Gems/2.6.0/gems/molinillo-0.6.6/lib/molinillo/resolution.rb:257:in `process_topmost_state'
    /Library/Ruby/Gems/2.6.0/gems/molinillo-0.6.6/lib/molinillo/resolution.rb:182:in `resolve'
    /Library/Ruby/Gems/2.6.0/gems/molinillo-0.6.6/lib/molinillo/resolver.rb:43:in `resolve'
    /Library/Ruby/Gems/2.6.0/gems/cocoapods-1.9.1/lib/cocoapods/resolver.rb:94:in `resolve'
    /Library/Ruby/Gems/2.6.0/gems/cocoapods-1.9.1/lib/cocoapods/installer/analyzer.rb:1065:in `block in
    resolve_dependencies'
    /Library/Ruby/Gems/2.6.0/gems/cocoapods-1.9.1/lib/cocoapods/user_interface.rb:64:in `section'
    /Library/Ruby/Gems/2.6.0/gems/cocoapods-1.9.1/lib/cocoapods/installer/analyzer.rb:1063:in `resolve_dependencies'
    /Library/Ruby/Gems/2.6.0/gems/cocoapods-1.9.1/lib/cocoapods/installer/analyzer.rb:124:in `analyze'
    /Library/Ruby/Gems/2.6.0/gems/cocoapods-1.9.1/lib/cocoapods/installer.rb:410:in `analyze'
    /Library/Ruby/Gems/2.6.0/gems/cocoapods-1.9.1/lib/cocoapods/installer.rb:235:in `block in resolve_dependencies'
    /Library/Ruby/Gems/2.6.0/gems/cocoapods-1.9.1/lib/cocoapods/user_interface.rb:64:in `section'
    /Library/Ruby/Gems/2.6.0/gems/cocoapods-1.9.1/lib/cocoapods/installer.rb:234:in `resolve_dependencies'
    /Library/Ruby/Gems/2.6.0/gems/cocoapods-1.9.1/lib/cocoapods/installer.rb:156:in `install!'
    /Library/Ruby/Gems/2.6.0/gems/cocoapods-1.9.1/lib/cocoapods/command/install.rb:52:in `run'
    /Library/Ruby/Gems/2.6.0/gems/claide-1.0.3/lib/claide/command.rb:334:in `run'
    /Library/Ruby/Gems/2.6.0/gems/cocoapods-1.9.1/lib/cocoapods/command.rb:52:in `run'
    /Library/Ruby/Gems/2.6.0/gems/cocoapods-1.9.1/bin/pod:55:in `<top (required)>'
    /usr/local/bin/pod:23:in `load'
    /usr/local/bin/pod:23:in `<main>'

Error: CocoaPods's specs repository is too out-of-date to satisfy dependencies.
To update the CocoaPods specs, run:
  pod repo update



Error running pod install
Error launching application on iPhone 11.