Undefined symbols for architecture x86_64 flutter

Question

I'm working in an app flutter. Android working fine but in ios no. I need some help to run this on ios mobile. I'm using lib: google_maps_flutter: ^0.5.27+3 and firebase_ml_vision: ^0.9.3+8. Xcode 11.4.1 and Mac os Catalina 10.15.4. Someone knows how to solve this. I didn't found yet.

flutter doctor
[✓] Flutter (Channel stable, v1.17.0, on Mac OS X 10.15.4 19E287, locale en-BR)
[✓] Android toolchain - develop for Android devices (Android SDK version 28.0.3)
[✓] Xcode - develop for iOS and macOS (Xcode 11.4.1)
[✓] Android Studio (version 3.6)
[✓] VS Code (version 1.45.0)
[✓] Connected device (1 available)

• No issues found!

Log Error bellow:

Undefined symbols for architecture x86_64:
  "_OBJC_CLASS_$_GMSPolyline", referenced from:
      objc-class-ref in google_maps_flutter(GoogleMapPolylineController.o)
  "_OBJC_CLASS_$_FIRVisionOnDeviceImageLabelerOptions", referenced from:
      objc-class-ref in firebase_ml_vision(ImageLabeler.o)
  "_FIRFaceLandmarkTypeLeftEar", referenced from:
      ___39-[FaceDetector handleDetection:result:]_block_invoke in firebase_ml_vision(FaceDetector.o)
  "_FIRFaceLandmarkTypeMouthLeft", referenced from:
      ___39-[FaceDetector handleDetection:result:]_block_invoke in firebase_ml_vision(FaceDetector.o)
  "_FIRFaceLandmarkTypeRightCheek", referenced from:
      ___39-[FaceDetector handleDetection:result:]_block_invoke in firebase_ml_vision(FaceDetector.o)
  "_FIRFaceLandmarkTypeNoseBase", referenced from:
      ___39-[FaceDetector handleDetection:result:]_block_invoke in firebase_ml_vision(FaceDetector.o)
  "_FIRFaceLandmarkTypeRightEye", referenced from:
      ___39-[FaceDetector handleDetection:result:]_block_invoke in firebase_ml_vision(FaceDetector.o)
  "_OBJC_CLASS_$_GMSMarker", referenced from:
      objc-class-ref in google_maps_flutter(GoogleMapMarkerController.o)
  "_FIRFaceLandmarkTypeMouthRight", referenced from:
      ___39-[FaceDetector handleDetection:result:]_block_invoke in firebase_ml_vision(FaceDetector.o)
  "_FIRFaceContourTypeLeftEye", referenced from:
      ___39-[FaceDetector handleDetection:result:]_block_invoke in firebase_ml_vision(FaceDetector.o)
  "_FIRFaceContourTypeRightEye", referenced from:
      ___39-[FaceDetector handleDetection:result:]_block_invoke in firebase_ml_vision(FaceDetector.o)
  "_FIRFaceContourTypeLowerLipTop", referenced from:
      ___39-[FaceDetector handleDetection:result:]_block_invoke in firebase_ml_vision(FaceDetector.o)
  "_OBJC_CLASS_$_GMSServices", referenced from:
      objc-class-ref in AppDelegate.o
  "_FIRFaceContourTypeNoseBottom", referenced from:
      ___39-[FaceDetector handleDetection:result:]_block_invoke in firebase_ml_vision(FaceDetector.o)
  "_FIRFaceLandmarkTypeLeftCheek", referenced from:
      ___39-[FaceDetector handleDetection:result:]_block_invoke in firebase_ml_vision(FaceDetector.o)
  "_FIRFaceLandmarkTypeLeftEye", referenced from:
      ___39-[FaceDetector handleDetection:result:]_block_invoke in firebase_ml_vision(FaceDetector.o)
  "_OBJC_CLASS_$_GMSMapStyle", referenced from:
      objc-class-ref in google_maps_flutter(GoogleMapController.o)
  "_FIRFaceContourTypeRightEyebrowTop", referenced from:
      ___39-[FaceDetector handleDetection:result:]_block_invoke in firebase_ml_vision(FaceDetector.o)
  "_OBJC_CLASS_$_GMSPolygon", referenced from:
      objc-class-ref in google_maps_flutter(GoogleMapPolygonController.o)
  "_FIRFaceContourTypeUpperLipTop", referenced from:
      ___39-[FaceDetector handleDetection:result:]_block_invoke in firebase_ml_vision(FaceDetector.o)
  "_FIRFaceContourTypeRightEyebrowBottom", referenced from:
      ___39-[FaceDetector handleDetection:result:]_block_invoke in firebase_ml_vision(FaceDetector.o)
  "_FIRFaceContourTypeLeftEyebrowBottom", referenced from:
      ___39-[FaceDetector handleDetection:result:]_block_invoke in firebase_ml_vision(FaceDetector.o)
  "_FIRFaceLandmarkTypeRightEar", referenced from:
      ___39-[FaceDetector handleDetection:result:]_block_invoke in firebase_ml_vision(FaceDetector.o)
  "_FIRFaceContourTypeUpperLipBottom", referenced from:
      ___39-[FaceDetector handleDetection:result:]_block_invoke in firebase_ml_vision(FaceDetector.o)
  "_OBJC_CLASS_$_FIRVisionCloudImageLabelerOptions", referenced from:
      objc-class-ref in firebase_ml_vision(ImageLabeler.o)
  "_OBJC_CLASS_$_GMSCameraPosition", referenced from:
      objc-class-ref in google_maps_flutter(GoogleMapController.o)
  "_kGMSMinZoomLevel", referenced from:
      _InterpretMapOptions in google_maps_flutter(GoogleMapController.o)
  "_OBJC_CLASS_$_GMSMapView", referenced from:
      objc-class-ref in google_maps_flutter(GoogleMapController.o)
  "_OBJC_CLASS_$_GMSMutablePath", referenced from:
      objc-class-ref in google_maps_flutter(GoogleMapPolygonController.o)
      objc-class-ref in google_maps_flutter(GoogleMapPolylineController.o)
  "_OBJC_CLASS_$_GMSCircle", referenced from:
      objc-class-ref in google_maps_flutter(GoogleMapCircleController.o)
  "_FIRFaceLandmarkTypeMouthBottom", referenced from:
      ___39-[FaceDetector handleDetection:result:]_block_invoke in firebase_ml_vision(FaceDetector.o)
  "_OBJC_CLASS_$_GMSCoordinateBounds", referenced from:
      objc-class-ref in google_maps_flutter(GoogleMapController.o)
  "_OBJC_CLASS_$_GMSCameraUpdate", referenced from:
      objc-class-ref in google_maps_flutter(GoogleMapController.o)
  "_FIRFaceContourTypeLeftEyebrowTop", referenced from:
      ___39-[FaceDetector handleDetection:result:]_block_invoke in firebase_ml_vision(FaceDetector.o)
  "_OBJC_CLASS_$_FIRVision", referenced from:
      objc-class-ref in firebase_ml_vision(FLTFirebaseMlVisionPlugin.o)
  "_OBJC_CLASS_$_FIRVisionFaceDetectorOptions", referenced from:
      objc-class-ref in firebase_ml_vision(FaceDetector.o)
  "_kGMSMaxZoomLevel", referenced from:
      _InterpretMapOptions in google_maps_flutter(GoogleMapController.o)
  "_FIRFaceContourTypeAll", referenced from:
      ___39-[FaceDetector handleDetection:result:]_block_invoke in firebase_ml_vision(FaceDetector.o)
  "_OBJC_CLASS_$_FIRVisionBarcodeDetectorOptions", referenced from:
      objc-class-ref in firebase_ml_vision(BarcodeDetector.o)
  "_OBJC_CLASS_$_FIRApp", referenced from:
      objc-class-ref in firebase_ml_vision(FLTFirebaseMlVisionPlugin.o)
  "_FIRFaceContourTypeLowerLipBottom", referenced from:
      ___39-[FaceDetector handleDetection:result:]_block_invoke in firebase_ml_vision(FaceDetector.o)
  "_OBJC_CLASS_$_FIRVisionImage", referenced from:
      objc-class-ref in firebase_ml_vision(FLTFirebaseMlVisionPlugin.o)
  "_FIRFaceContourTypeFace", referenced from:
      ___39-[FaceDetector handleDetection:result:]_block_invoke in firebase_ml_vision(FaceDetector.o)
  "_FIRFaceContourTypeNoseBridge", referenced from:
      ___39-[FaceDetector handleDetection:result:]_block_invoke in firebase_ml_vision(FaceDetector.o)
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)

Answer 1

Probably the error is on some of the XCode project files, try:

1. Make a backup of your project.

2. Run this command

   flutter clean && \ rm ios/Podfile ios/Podfile.lock pubspec.lock && \ rm -rf ios/Pods ios/Runner.xcworkspace && \ flutter run

Reference

Answer 2

This is often a dependency resolution issue due to existing caching. If you can't build for iOS, regardless of the plugin's version, do the following steps.

Note: It's recommended that you do this every now and then and it also gets rid of a lot of used space on your machine.

1. On project/ios folder, run pod deintegrate && rm Podfile.lock && pod install
2. On your project folder, run flutter clean
3. Clear the Xcode derived data by running rm -rf ~/Library/Developer/Xcode/DerivedData
4. Open the project with Xcode and also clean by doing Cmd + Shift + K
5. Build with flutter build ios command.