Swift on iOS and Firestore don't play ball.

[kroikie]

Steps to reproduce:

1. Create New App in Android studio including support for swift.
2. Add Firestore plugins and create firestore app
3. Try to run on iOS

I'm not adding the main.dart because I've not edited it from the boilerplate given when the new app was created.

Logs

Launching lib/main.dart on iPhone 7 in debug mode...
Starting Xcode build...
Xcode build done.
Failed to build iOS app
Error output from Xcode build:
↳
    ** BUILD FAILED **
    
Xcode's output:
↳
    === BUILD TARGET Runner OF PROJECT Runner WITH CONFIGURATION Debug ===
    The use of Swift 3 @objc inference in Swift 4 mode is deprecated. Please address deprecated @objc inference warnings, test your code with “Use of deprecated Swift 3 @objc inference” logging enabled, and then disable inference by changing the "Swift 3 @objc Inference" build setting to "Default" for the "Runner" target.
    === BUILD TARGET Runner OF PROJECT Runner WITH CONFIGURATION Debug ===
    diff: /Podfile.lock: No such file or directory
    diff: /Manifest.lock: No such file or directory
    error: The sandbox is not in sync with the Podfile.lock. Run 'pod install' or update your CocoaPods installation.
Could not build the application for the simulator.
Error launching application on iPhone 7.

Flutter Analyze failed to complete (been running 10mins...)

[✓] Flutter (Channel beta, v0.4.4, on Mac OS X 10.13.4 17E202, locale en-GB)
    • Flutter version 0.4.4 at /Users/mikeashelby/development/flutter
    • Framework revision f9bb4289e9 (4 weeks ago), 2018-05-11 21:44:54 -0700
    • Engine revision 06afdfe54e
    • Dart version 2.0.0-dev.54.0.flutter-46ab040e58

[✓] Android toolchain - develop for Android devices (Android SDK 27.0.3)
    • Android SDK at /Users/mikeashelby/Library/Android/sdk
    • Android NDK location not configured (optional; useful for native profiling support)
    • Platform android-27, build-tools 27.0.3
    • Java binary at: /Applications/Android Studio.app/Contents/jre/jdk/Contents/Home/bin/java
    • Java version OpenJDK Runtime Environment (build 1.8.0_152-release-1024-b01)
    • All Android licenses accepted.

[✓] iOS toolchain - develop for iOS devices (Xcode 9.4)
    • Xcode at /Applications/Xcode.app/Contents/Developer
    • Xcode 9.4, Build version 9F1027a
    • ios-deploy 1.9.2
    • CocoaPods version 1.5.0

[✓] Android Studio (version 3.1)
    • Android Studio at /Applications/Android Studio.app/Contents
    • Flutter plugin version 24.2.1
    • Dart plugin version 173.4700
    • Java version OpenJDK Runtime Environment (build 1.8.0_152-release-1024-b01)

[✓] Connected devices (2 available)
    • A0001    • d52816c6                             • android-arm • Android 7.1.2 (API 25)
    • iPhone 7 • 4D6D4CB6-EE8B-40C8-9676-C95A8F3D8334 • ios         • iOS 11.4 (simulator)

• No issues found!

Any help appreciated.