I have tried even pod update Firebase/Firestore still getting below error when running on iOS simulator after installing cloud_firestore package.
Even I have tried to delete Podfile.lock many times and flutter clean then flutter run.
Note:
- Flutter version: Flutter 2.0.2 
- Dart 2.12.1 - Failed to build iOS app Error output from Xcode build: ↳ ** BUILD FAILED ** - Xcode's output: ↳ In file included from /Users/gwl/firebase_demo/ios/Pods/abseil/absl/base/internal/thread_identity.cc:26: In file included from /Users/gwl/firebase_demo/ios/Pods/abseil/absl/base/call_once.h:34: /Users/gwl/firebase_demo/ios/Pods/abseil/absl/base/internal/invoke.h:42:10: fatal error: 'absl/meta/type_traits.h' file not found #include "absl/meta/type_traits.h" ^~~~~~~~~~~~~~~~~~~~~~~~~ /Users/gwl/firebase_demo/ios/Pods/abseil/absl/base/internal/invoke.h:42:10: note: did not find header 'meta/type_traits.h' in framework 'absl' (loaded from '/Users/gwl/firebase_demo/build/ios/Debug-iphonesimulator/abseil') 1 error generated. note: Using new build system note: Building targets in parallel note: Planning build note: Constructing build description Could not build the application for the simulator. Error launching application on iPhone 11.
 
     
     
    