title: Cannot able to build on simulator
body: <p>I'm trying to build on simulator but getting warnings and errors.
  I have replaced many packages with latest version but nothing happened still getting a lots of warnings.</p>
  
  <p>My MacOs version: catalina 10.15.2</p>
  
  <p>flutter version:1.12.13+hotfix.5</p>
  
  <p>dart version:2.7.0</p>
  
  <p>flutter run output console:</p>
  
  <p>Errors:</p>
  
  <pre><code>Failed to build iOS app
  Error output from Xcode build:
  ↳
      2019-12-23 14:40:27.817 XCBBuildService[82944:471889] Failed to remove:
      /Users/brightrootssgruti/Library/Developer/Xcode/DerivedData/Runner-asthupoaqltbbmesqetcacindons/Build/Intermediates.noindex/XCBuil
      dData/ad956668556b5ace65773807034d312f-manifest.xcbuild:
      unlink(/Users/brightrootssgruti/Library/Developer/Xcode/DerivedData/Runner-asthupoaqltbbmesqetcacindons/Build/Intermediates.noindex
      /XCBuildData/ad956668556b5ace65773807034d312f-manifest.xcbuild): No such file or directory (2)
      2019-12-23 14:40:28.782 XCBBuildService[82944:471889] Failed to remove:
      /Users/brightrootssgruti/Library/Developer/Xcode/DerivedData/Runner-asthupoaqltbbmesqetcacindons/Build/Intermediates.noindex/XCBuil
      dData/ad956668556b5ace65773807034d312f-desc.xcbuild:
      unlink(/Users/brightrootssgruti/Library/Developer/Xcode/DerivedData/Runner-asthupoaqltbbmesqetcacindons/Build/Intermediates.noindex
      /XCBuildData/ad956668556b5ace65773807034d312f-desc.xcbuild): No such file or directory (2)
      ** BUILD FAILED **
  
  </code></pre>
  
  <p>Xcode's output:</p>
  
  <pre><code>Xcode's output:
  ↳
      In file included from
      /Users/brightrootssgruti/ShrutiProjects/flutter/.pub-cache/hosted/pub.dartlang.org/fluttertoast-3.1.0/ios/Classes/UIView+Toast.m:26
      :
      /Users/brightrootssgruti/ShrutiProjects/flutter/.pub-cache/hosted/pub.dartlang.org/fluttertoast-3.1.0/ios/Classes/UIView+Toast.h:32
      8:19: warning: empty paragraph passed to '@param' command [-Wdocumentation]
       @param sharedStyle
       ~~~~~~~~~~~~~~~~~^
      /Users/brightrootssgruti/ShrutiProjects/flutter/.pub-cache/hosted/pub.dartlang.org/fluttertoast-3.1.0/ios/Classes/UIView+Toast.h:34
      3:25: warning: empty paragraph passed to '@param' command [-Wdocumentation]
       @param allowTapToDismiss
       ~~~~~~~~~~~~~~~~~~~~~~~^
      /Users/brightrootssgruti/ShrutiProjects/flutter/.pub-cache/hosted/pub.dartlang.org/fluttertoast-3.1.0/ios/Classes/UIView+Toast.h:34
      3:9: warning: parameter 'allowTapToDismiss' not found in the function declaration [-Wdocumentation]
       @param allowTapToDismiss
              ^~~~~~~~~~~~~~~~~
      /Users/brightrootssgruti/ShrutiProjects/flutter/.pub-cache/hosted/pub.dartlang.org/fluttertoast-3.1.0/ios/Classes/UIView+Toast.h:34
      3:9: note: did you mean 'tapToDismissEnabled'?
       @param allowTapToDismiss
              ^~~~~~~~~~~~~~~~~
              tapToDismissEnabled
      /Users/brightrootssgruti/ShrutiProjects/flutter/.pub-cache/hosted/pub.dartlang.org/fluttertoast-3.1.0/ios/Classes/UIView+Toast.h:36
      2:20: warning: empty paragraph passed to '@param' command [-Wdocumentation]
       @param queueEnabled
       ~~~~~~~~~~~~~~~~~~^
      4 warnings generated.
      In file included from
      /Users/brightrootssgruti/ShrutiProjects/flutter/.pub-cache/hosted/pub.dartlang.org/fluttertoast-3.1.0/ios/Classes/FluttertoastPlugi
      n.m:2:
      /Users/brightrootssgruti/ShrutiProjects/flutter/.pub-cache/hosted/pub.dartlang.org/fluttertoast-3.1.0/ios/Classes/UIView+Toast.h:32
      8:19: warning: empty paragraph passed to '@param' command [-Wdocumentation]
       @param sharedStyle
       ~~~~~~~~~~~~~~~~~^
      /Users/brightrootssgruti/ShrutiProjects/flutter/.pub-cache/hosted/pub.dartlang.org/fluttertoast-3.1.0/ios/Classes/UIView+Toast.h:34
      3:25: warning: empty paragraph passed to '@param' command [-Wdocumentation]
       @param allowTapToDismiss
       ~~~~~~~~~~~~~~~~~~~~~~~^
      /Users/brightrootssgruti/ShrutiProjects/flutter/.pub-cache/hosted/pub.dartlang.org/fluttertoast-3.1.0/ios/Classes/UIView+Toast.h:34
      3:9: warning: parameter 'allowTapToDismiss' not found in the function declaration [-Wdocumentation]
       @param allowTapToDismiss
              ^~~~~~~~~~~~~~~~~
      /Users/brightrootssgruti/ShrutiProjects/flutter/.pub-cache/hosted/pub.dartlang.org/fluttertoast-3.1.0/ios/Classes/UIView+Toast.h:34
      3:9: note: did you mean 'tapToDismissEnabled'?
       @param allowTapToDismiss
              ^~~~~~~~~~~~~~~~~
              tapToDismissEnabled
      /Users/brightrootssgruti/ShrutiProjects/flutter/.pub-cache/hosted/pub.dartlang.org/fluttertoast-3.1.0/ios/Classes/UIView+Toast.h:36
      2:20: warning: empty paragraph passed to '@param' command [-Wdocumentation]
       @param queueEnabled
       ~~~~~~~~~~~~~~~~~~^
      /Users/brightrootssgruti/ShrutiProjects/flutter/.pub-cache/hosted/pub.dartlang.org/fluttertoast-3.1.0/ios/Classes/FluttertoastPlugi
      n.m:19:23: warning: unused variable 'viewController' [-Wunused-variable]
          UIViewController *viewController =
                            ^
      /Users/brightrootssgruti/ShrutiProjects/flutter/.pub-cache/hosted/pub.dartlang.org/fluttertoast-3.1.0/ios/Classes/FluttertoastPlugi
      n.m:70:21: warning: unused variable 'topPadding' [-Wunused-variable]
                  CGFloat topPadding = window.safeAreaInsets.top;
                          ^
      /Users/brightrootssgruti/ShrutiProjects/flutter/.pub-cache/hosted/pub.dartlang.org/fluttertoast-3.1.0/ios/Classes/FluttertoastPlugi
      n.m:71:21: warning: unused variable 'bottomPadding' [-Wunused-variable]
                  CGFloat bottomPadding = window.safeAreaInsets.bottom;
                          ^
      /Users/brightrootssgruti/ShrutiProjects/flutter/.pub-cache/hosted/pub.dartlang.org/fluttertoast-3.1.0/ios/Classes/FluttertoastPlugi
      n.m:48:19: warning: unused variable 'size' [-Wunused-variable]
              NSNumber *size = call.arguments[@"size"];
                        ^
      8 warnings generated.
      /Users/brightrootssgruti/ShrutiProjects/flutter/.pub-cache/git/plugins-441417c2fed0ff26bf84a49ab2c5ffd2aa5487de/packages/firebase_a
      uth/ios/Classes/FirebaseAuthPlugin.m:358:62: warning: implicit conversion loses integer precision: 'long' to 'int'
      [-Wshorten-64-to-32]
        userData[@"lastSignInTimestamp"] = [NSNumber numberWithInt:lastSignInDate];
                                           ~                       ^~~~~~~~~~~~~~
      1 warning generated.
      /Users/brightrootssgruti/ShrutiProjects/flutter/.pub-cache/hosted/pub.dartlang.org/firebase_admob-0.9.0+10/ios/Classes/FLTRewardedV
      ideoAdWrapper.m:67:66: warning: implicit conversion loses integer precision: 'FLTRewardedVideoAdStatus' to 'int'
      [-Wshorten-64-to-32]
            (NSString *)rewardedStatusToString[[NSNumber numberWithInt:_rewardedStatus]];
                                               ~                       ^~~~~~~~~~~~~~~
      1 warning generated.
      /Users/brightrootssgruti/ShrutiProjects/flutter/.pub-cache/hosted/pub.dartlang.org/firebase_admob-0.9.0+10/ios/Classes/FLTRequestFa
      ctory.m:71:13: warning: 'testDevices' is deprecated: Use GADMobileAds.sharedInstance.requestConfiguration.testDeviceIdentifiers.
      [-Wdeprecated-declarations]
          request.testDevices = testDevices;
                  ^
      In module 'GoogleMobileAds' imported from
      /Users/brightrootssgruti/ShrutiProjects/flutter/.pub-cache/hosted/pub.dartlang.org/firebase_admob-0.9.0+10/ios/Classes/FLTRequestFa
      ctory.h:5:
      /Users/brightrootssgruti/ShrutiProjects/shrutiFlutterProjects/babilok/ios/Pods/Google-Mobile-Ads-SDK/Frameworks/GoogleMobileAdsFram
      ework-Current/GoogleMobileAds.framework/Headers/GADRequest.h:88:71: note: 'testDevices' has been explicitly marked deprecated here
      @property(nonatomic, copy, nullable) NSArray&lt;NSString *&gt; *testDevices GAD_DEPRECATED_MSG_ATTRIBUTE(
                                                                            ^
      In module 'GoogleMobileAds' imported from
      /Users/brightrootssgruti/ShrutiProjects/flutter/.pub-cache/hosted/pub.dartlang.org/firebase_admob-0.9.0+10/ios/Classes/FLTRequestFa
      ctory.h:5:
      /Users/brightrootssgruti/ShrutiProjects/shrutiFlutterProjects/babilok/ios/Pods/Google-Mobile-Ads-SDK/Frameworks/GoogleMobileAdsFram
      ework-Current/GoogleMobileAds.framework/Headers/GoogleMobileAdsDefines.h:25:56: note: expanded from macro
      'GAD_DEPRECATED_MSG_ATTRIBUTE'
      #define GAD_DEPRECATED_MSG_ATTRIBUTE(s) __attribute__((deprecated(s)))
                                                             ^
      /Users/brightrootssgruti/ShrutiProjects/flutter/.pub-cache/hosted/pub.dartlang.org/firebase_admob-0.9.0+10/ios/Classes/FLTRequestFa
      ctory.m:91:15: warning: 'birthday' is deprecated [-Wdeprecated-declarations]
            request.birthday =
                    ^
      In module 'GoogleMobileAds' imported from
      /Users/brightrootssgruti/ShrutiProjects/flutter/.pub-cache/hosted/pub.dartlang.org/firebase_admob-0.9.0+10/ios/Classes/FLTRequestFa
      ctory.h:5:
      /Users/brightrootssgruti/ShrutiProjects/shrutiFlutterProjects/babilok/ios/Pods/Google-Mobile-Ads-SDK/Frameworks/GoogleMobileAdsFram
      ework-Current/GoogleMobileAds.framework/Headers/GADRequest.h:95:55: note: 'birthday' has been explicitly marked deprecated here
      @property(nonatomic, copy, nullable) NSDate *birthday GAD_DEPRECATED_ATTRIBUTE;
                                                            ^
      In module 'GoogleMobileAds' imported from
      /Users/brightrootssgruti/ShrutiProjects/flutter/.pub-cache/hosted/pub.dartlang.org/firebase_admob-0.9.0+10/ios/Classes/FLTRequestFa
      ctory.h:5:
      /Users/brightrootssgruti/ShrutiProjects/shrutiFlutterProjects/babilok/ios/Pods/Google-Mobile-Ads-SDK/Frameworks/GoogleMobileAdsFram
      ework-Current/GoogleMobileAds.framework/Headers/GoogleMobileAdsDefines.h:33:49: note: expanded from macro
      'GAD_DEPRECATED_ATTRIBUTE'
      #define GAD_DEPRECATED_ATTRIBUTE __attribute__((deprecated))
                                                      ^
      /Users/brightrootssgruti/ShrutiProjects/flutter/.pub-cache/hosted/pub.dartlang.org/firebase_admob-0.9.0+10/ios/Classes/FLTRequestFa
      ctory.m:106:19: warning: 'gender' is deprecated [-Wdeprecated-declarations]
                request.gender = genderValue;
                        ^
      In module 'GoogleMobileAds' imported from
      /Users/brightrootssgruti/ShrutiProjects/flutter/.pub-cache/hosted/pub.dartlang.org/firebase_admob-0.9.0+10/ios/Classes/FLTRequestFa
      ctory.h:5:
      /Users/brightrootssgruti/ShrutiProjects/shrutiFlutterProjects/babilok/ios/Pods/Google-Mobile-Ads-SDK/Frameworks/GoogleMobileAdsFram
      ework-Current/GoogleMobileAds.framework/Headers/GADRequest.h:92:47: note: 'gender' has been explicitly marked deprecated here
      @property(nonatomic, assign) GADGender gender GAD_DEPRECATED_ATTRIBUTE;
                                                    ^
      In module 'GoogleMobileAds' imported from
      /Users/brightrootssgruti/ShrutiProjects/flutter/.pub-cache/hosted/pub.dartlang.org/firebase_admob-0.9.0+10/ios/Classes/FLTRequestFa
      ctory.h:5:
      /Users/brightrootssgruti/ShrutiProjects/shrutiFlutterProjects/babilok/ios/Pods/Google-Mobile-Ads-SDK/Frameworks/GoogleMobileAdsFram
      ework-Current/GoogleMobileAds.framework/Headers/GoogleMobileAdsDefines.h:33:49: note: expanded from macro
      'GAD_DEPRECATED_ATTRIBUTE'
      #define GAD_DEPRECATED_ATTRIBUTE __attribute__((deprecated))
                                                      ^
      /Users/brightrootssgruti/ShrutiProjects/flutter/.pub-cache/hosted/pub.dartlang.org/firebase_admob-0.9.0+10/ios/Classes/FLTRequestFa
      ctory.m:116:14: warning: 'tagForChildDirectedTreatment:' is deprecated:  use [GADMobileAds.sharedInstance.requestConfiguration
      tagForChildDirectedTreatment] [-Wdeprecated-declarations]
          [request tagForChildDirectedTreatment:childDirected.boolValue];
                   ^
      In module 'GoogleMobileAds' imported from
      /Users/brightrootssgruti/ShrutiProjects/flutter/.pub-cache/hosted/pub.dartlang.org/firebase_admob-0.9.0+10/ios/Classes/FLTRequestFa
      ctory.h:5:
      /Users/brightrootssgruti/ShrutiProjects/shrutiFlutterProjects/babilok/ios/Pods/Google-Mobile-Ads-SDK/Frameworks/GoogleMobileAdsFram
      ework-Current/GoogleMobileAds.framework/Headers/GADRequest.h:126:5: note: 'tagForChildDirectedTreatment:' has been explicitly
      marked deprecated here
          GAD_DEPRECATED_MSG_ATTRIBUTE(
          ^
      In module 'GoogleMobileAds' imported from
      /Users/brightrootssgruti/ShrutiProjects/flutter/.pub-cache/hosted/pub.dartlang.org/firebase_admob-0.9.0+10/ios/Classes/FLTRequestFa
      ctory.h:5:
      /Users/brightrootssgruti/ShrutiProjects/shrutiFlutterProjects/babilok/ios/Pods/Google-Mobile-Ads-SDK/Frameworks/GoogleMobileAdsFram
      ework-Current/GoogleMobileAds.framework/Headers/GoogleMobileAdsDefines.h:25:56: note: expanded from macro
      'GAD_DEPRECATED_MSG_ATTRIBUTE'
      #define GAD_DEPRECATED_MSG_ATTRIBUTE(s) __attribute__((deprecated(s)))
                                                             ^
      4 warnings generated.
      /Users/brightrootssgruti/ShrutiProjects/flutter/.pub-cache/hosted/pub.dartlang.org/firebase_admob-0.9.0+10/ios/Classes/FLTMobileAd.
      m:40:17: warning: 'configureWithApplicationID:' is deprecated: Use [GADMobileAds.sharedInstance startWithCompletionHandler:]
      [-Wdeprecated-declarations]
        [GADMobileAds configureWithApplicationID:appId];
                      ^
      In module 'GoogleMobileAds' imported from
      /Users/brightrootssgruti/ShrutiProjects/flutter/.pub-cache/hosted/pub.dartlang.org/firebase_admob-0.9.0+10/ios/Classes/FLTMobileAd.
      h:6:
      /Users/brightrootssgruti/ShrutiProjects/shrutiFlutterProjects/babilok/ios/Pods/Google-Mobile-Ads-SDK/Frameworks/GoogleMobileAdsFram
      ework-Current/GoogleMobileAds.framework/Headers/GADMobileAds.h:74:5: note: 'configureWithApplicationID:' has been explicitly marked
      deprecated here
          GAD_DEPRECATED_MSG_ATTRIBUTE("Use [GADMobileAds.sharedInstance startWithCompletionHandler:]");
          ^
      In module 'GoogleMobileAds' imported from
      /Users/brightrootssgruti/ShrutiProjects/flutter/.pub-cache/hosted/pub.dartlang.org/firebase_admob-0.9.0+10/ios/Classes/FLTMobileAd.
      h:6:
      /Users/brightrootssgruti/ShrutiProjects/shrutiFlutterProjects/babilok/ios/Pods/Google-Mobile-Ads-SDK/Frameworks/GoogleMobileAdsFram
      ework-Current/GoogleMobileAds.framework/Headers/GoogleMobileAdsDefines.h:25:56: note: expanded from macro
      'GAD_DEPRECATED_MSG_ATTRIBUTE'
      #define GAD_DEPRECATED_MSG_ATTRIBUTE(s) __attribute__((deprecated(s)))
                                                             ^
      /Users/brightrootssgruti/ShrutiProjects/flutter/.pub-cache/hosted/pub.dartlang.org/firebase_admob-0.9.0+10/ios/Classes/FLTMobileAd.
      m:98:79: warning: implicit conversion loses integer precision: 'FLTMobileAdStatus' to 'int' [-Wshorten-64-to-32]
        NSString *statusString = (NSString *)statusToString[[NSNumber numberWithInt:_status]];
                                                            ~                       ^~~~~~~
      2 warnings generated.
      &lt;module-includes&gt;:1:1: warning: umbrella header for module 'cloud_firestore' does not include header 'CloudFirestorePlugin.h'
      [-Wincomplete-umbrella]
      #import "Headers/cloud_firestore-umbrella.h"
      ^
      1 warning generated.
      &lt;module-includes&gt;:1:1: warning: umbrella header for module 'firebase_admob' does not include header 'FirebaseAdMobPlugin.h'
      [-Wincomplete-umbrella]
      #import "Headers/firebase_admob-umbrella.h"
      ^
      1 warning generated.
      2 warnings generated.
      error: unable to read property list from file:
      /Users/brightrootssgruti/ShrutiProjects/shrutiFlutterProjects/babilok/ios/Runner/Info.plist: The operation couldn’t be completed.
      (XCBUtil.PropertyListConversionError error 1.) (in target 'Runner' from project 'Runner')
      note: Using new build system
      note: Planning build
      note: Constructing build description
  
  Could not build the application for the simulator.
  Error launching application on iPhone 11 Pro Max.
  Shrutis-MacBook-Air:babilok brightrootssgruti$ 
  </code></pre>