Facing build issue after updating the flutter

Question

I am this error while building for device for iOS in flutter repeatedly, I have tried many things but no resolution yet. This issue is occurring with flutter firebase project and the release is stuck for more than 4 days. I need updated guide for me to resolve this issue as soon as possible

I have updated the flutter and current versions are Flutter 1.20.3 and dart 2.9.2

2020-09-05 12:53:42.052 xcodebuild[72084:478348] warning: The file reference for "Objective-C/TOCropViewController/Models/TOActivityCroppedImageProvider.h" is a member of multiple groups ("TOCropViewController" and "TOCropViewController"); this indicates a malformed project. Only the membership in one of the groups will be preserved (but membership in targets will be unaffected). If you want a reference to the same file in more than one group, please add another reference to the same path. 2020-09-05 12:53:42.052 xcodebuild[72084:478348] warning: The file reference for "Objective-C/TOCropViewController/Views/TOCropOverlayView.h" is a member of multiple groups ("TOCropViewController" and "TOCropViewController"); this indicates a malformed project. Only the membership in one of the groups will be preserved (but membership in targets will be unaffected). If you want a reference to the same file in more than one group, please add another reference to the same path. 2020-09-05 12:53:42.052 xcodebuild[72084:478348] warning: The file reference for "Objective-C/TOCropViewController/Models/TOCroppedImageAttributes.h" is a member of multiple groups ("TOCropViewController" and "TOCropViewController"); this indicates a malformed project. Only the membership in one of the groups will be preserved (but membership in targets will be unaffected). If you want a reference to the same file in more than one group, please add another reference to the same path. 2020-09-05 12:53:42.052 xcodebuild[72084:478348] warning: The file reference for "Objective-C/TOCropViewController/Views/TOCropScrollView.h" is a member of multiple groups ("TOCropViewController" and "TOCropViewController"); this indicates a malformed project. Only the membership in one of the groups will be preserved (but membership in targets will be unaffected). If you want a reference to the same file in more than one group, please add another reference to the same path. 2020-09-05 12:53:42.052 xcodebuild[72084:478348] warning: The file reference for "Objective-C/TOCropViewController/Views/TOCropToolbar.h" is a member of multiple groups ("TOCropViewController" and "TOCropViewController"); this indicates a malformed project. Only the membership in one of the groups will be preserved (but membership in targets will be unaffected). If you want a reference to the same file in more than one group, please add another reference to the same path. 2020-09-05 12:53:42.052 xcodebuild[72084:478348] warning: The file reference for "Objective-C/TOCropViewController/Views/TOCropView.h" is a member of multiple groups ("TOCropViewController" and "TOCropViewController"); this indicates a malformed project. Only the membership in one of the groups will be preserved (but membership in targets will be unaffected). If you want a reference to the same file in more than one group, please add another reference to the same path. 2020-09-05 12:53:42.052 xcodebuild[72084:478348] warning: The file reference for "Objective-C/TOCropViewController/TOCropViewController.h" is a member of multiple groups ("TOCropViewController" and "TOCropViewController"); this indicates a malformed project. Only the membership in one of the groups will be preserved (but membership in targets will be unaffected). If you want a reference to the same file in more than one group, please add another reference to the same path. 2020-09-05 12:53:42.052 xcodebuild[72084:478348] warning: The file reference for "Objective-C/TOCropViewController/Models/TOCropViewControllerTransitioning.h" is a member of multiple groups ("TOCropViewController" and "TOCropViewController"); this indicates a malformed project. Only the membership in one of the groups will be preserved (but membership in targets will be unaffected). If you want a reference to the same file in more than one group, please add another reference to the same path. ** BUILD FAILED **

Xcode's output: ↳ In file included from /Users/vickky/Documents/flutter/.pub-cache/hosted/pub.dartlang.org/fluttertoast-7.0.4/ios/Classes/UIView+Toast.m:26: /Users/vickky/Documents/flutter/.pub-cache/hosted/pub.dartlang.org/fluttertoast-7.0.4/ios/Classes/UIView+Toast.h:328:19: warning: empty paragraph passed to '@param' command [-Wdocumentation] @param sharedStyle ~~~~~~~~~~~~~~~~~^ /Users/vickky/Documents/flutter/.pub-cache/hosted/pub.dartlang.org/fluttertoast-7.0.4/ios/Classes/UIView+Toast.h:343:25: warning: empty paragraph passed to '@param' command [-Wdocumentation] @param allowTapToDismiss ~~~~~~~~~~~~~~~~~~~~~~~^ /Users/vickky/Documents/flutter/.pub-cache/hosted/pub.dartlang.org/fluttertoast-7.0.4/ios/Classes/UIView+Toast.h:343:9: warning: parameter 'allowTapToDismiss' not found in the function declaration [-Wdocumentation] @param allowTapToDismiss ^~~~~~~~~~~~~~~~~ /Users/vickky/Documents/flutter/.pub-cache/hosted/pub.dartlang.org/fluttertoast-7.0.4/ios/Classes/UIView+Toast.h:343:9: note: did you mean 'tapToDismissEnabled'? @param allowTapToDismiss ^~~~~~~~~~~~~~~~~ tapToDismissEnabled /Users/vickky/Documents/flutter/.pub-cache/hosted/pub.dartlang.org/fluttertoast-7.0.4/ios/Classes/UIView+Toast.h:362:20: warning: empty paragraph passed to '@param' command [-Wdocumentation] @param queueEnabled ~~~~~~~~~~~~~~~~~~^ 4 warnings generated. In file included from /Users/vickky/Documents/flutter/.pub-cache/hosted/pub.dartlang.org/fluttertoast-7.0.4/ios/Classes/UIView+Toast.m:26: /Users/vickky/Documents/flutter/.pub-cache/hosted/pub.dartlang.org/fluttertoast-7.0.4/ios/Classes/UIView+Toast.h:328:19: warning: empty paragraph passed to '@param' command [-Wdocumentation] @param sharedStyle ~~~~~~~~~~~~~~~~~^ /Users/vickky/Documents/flutter/.pub-cache/hosted/pub.dartlang.org/fluttertoast-7.0.4/ios/Classes/UIView+Toast.h:343:25: warning: empty paragraph passed to '@param' command [-Wdocumentation] @param allowTapToDismiss ~~~~~~~~~~~~~~~~~~~~~~~^ /Users/vickky/Documents/flutter/.pub-cache/hosted/pub.dartlang.org/fluttertoast-7.0.4/ios/Classes/UIView+Toast.h:343:9: warning: parameter 'allowTapToDismiss' not found in the function declaration [-Wdocumentation] @param allowTapToDismiss ^~~~~~~~~~~~~~~~~ /Users/vickky/Documents/flutter/.pub-cache/hosted/pub.dartlang.org/fluttertoast-7.0.4/ios/Classes/UIView+Toast.h:343:9: note: did you mean 'tapToDismissEnabled'? @param allowTapToDismiss ^~~~~~~~~~~~~~~~~ tapToDismissEnabled /Users/vickky/Documents/flutter/.pub-cache/hosted/pub.dartlang.org/fluttertoast-7.0.4/ios/Classes/UIView+Toast.h:362:20: warning: empty paragraph passed to '@param' command [-Wdocumentation] @param queueEnabled ~~~~~~~~~~~~~~~~~~^ 4 warnings generated. In file included from /Users/vickky/Documents/flutter/.pub-cache/hosted/pub.dartlang.org/fluttertoast-7.0.4/ios/Classes/FluttertoastPlugin.m:2: /Users/vickky/Documents/flutter/.pub-cache/hosted/pub.dartlang.org/fluttertoast-7.0.4/ios/Classes/UIView+Toast.h:328:19: warning: empty paragraph passed to '@param' command [-Wdocumentation] @param sharedStyle ~~~~~~~~~~~~~~~~~^ /Users/vickky/Documents/flutter/.pub-cache/hosted/pub.dartlang.org/fluttertoast-7.0.4/ios/Classes/UIView+Toast.h:343:25: warning: empty paragraph passed to '@param' command [-Wdocumentation] @param allowTapToDismiss ~~~~~~~~~~~~~~~~~~~~~~~^ /Users/vickky/Documents/flutter/.pub-cache/hosted/pub.dartlang.org/fluttertoast-7.0.4/ios/Classes/UIView+Toast.h:343:9: warning: parameter 'allowTapToDismiss' not found in the function declaration [-Wdocumentation] @param allowTapToDismiss ^~~~~~~~~~~~~~~~~ /Users/vickky/Documents/flutter/.pub-cache/hosted/pub.dartlang.org/fluttertoast-7.0.4/ios/Classes/UIView+Toast.h:343:9: note: did you mean 'tapToDismissEnabled'? @param allowTapToDismiss ^~~~~~~~~~~~~~~~~ tapToDismissEnabled /Users/vickky/Documents/flutter/.pub-cache/hosted/pub.dartlang.org/fluttertoast-7.0.4/ios/Classes/UIView+Toast.h:362:20: warning: empty paragraph passed to '@param' command [-Wdocumentation] @param queueEnabled ~~~~~~~~~~~~~~~~~~^ /Users/vickky/Documents/flutter/.pub-cache/hosted/pub.dartlang.org/fluttertoast-7.0.4/ios/Classes/FluttertoastPlugin.m:20:23: warning: unused variable 'viewController' [-Wunused-variable] UIViewController *viewController = ^ /Users/vickky/Documents/flutter/.pub-cache/hosted/pub.dartlang.org/fluttertoast-7.0.4/ios/Classes/FluttertoastPlugin.m:99:21: warning: unused variable 'topPadding' [-Wunused-variable] CGFloat topPadding = window.safeAreaInsets.top; ^ /Users/vickky/Documents/flutter/.pub-cache/hosted/pub.dartlang.org/fluttertoast-7.0.4/ios/Classes/FluttertoastPlugin.m:100:21: warning: unused variable 'bottomPadding' [-Wunused-variable] CGFloat bottomPadding = window.safeAreaInsets.bottom; ^ /Users/vickky/Documents/flutter/.pub-cache/hosted/pub.dartlang.org/fluttertoast-7.0.4/ios/Classes/FluttertoastPlugin.m:73:19: warning: unused variable 'size' [-Wunused-variable] NSNumber *size = call.arguments[@"size"]; ^ 8 warnings generated. In file included from /Users/vickky/Documents/flutter/.pub-cache/hosted/pub.dartlang.org/fluttertoast-7.0.4/ios/Classes/FluttertoastPlugin.m:2: /Users/vickky/Documents/flutter/.pub-cache/hosted/pub.dartlang.org/fluttertoast-7.0.4/ios/Classes/UIView+Toast.h:328:19: warning: empty paragraph passed to '@param' command [-Wdocumentation] @param sharedStyle ~~~~~~~~~~~~~~~~~^ /Users/vickky/Documents/flutter/.pub-cache/hosted/pub.dartlang.org/fluttertoast-7.0.4/ios/Classes/UIView+Toast.h:343:25: warning: empty paragraph passed to '@param' command [-Wdocumentation] @param allowTapToDismiss ~~~~~~~~~~~~~~~~~~~~~~~^ /Users/vickky/Documents/flutter/.pub-cache/hosted/pub.dartlang.org/fluttertoast-7.0.4/ios/Classes/UIView+Toast.h:343:9: warning: parameter 'allowTapToDismiss' not found in the function declaration [-Wdocumentation] @param allowTapToDismiss ^~~~~~~~~~~~~~~~~ /Users/vickky/Documents/flutter/.pub-cache/hosted/pub.dartlang.org/fluttertoast-7.0.4/ios/Classes/UIView+Toast.h:343:9: note: did you mean 'tapToDismissEnabled'? @param allowTapToDismiss ^~~~~~~~~~~~~~~~~ tapToDismissEnabled /Users/vickky/Documents/flutter/.pub-cache/hosted/pub.dartlang.org/fluttertoast-7.0.4/ios/Classes/UIView+Toast.h:362:20: warning: empty paragraph passed to '@param' command [-Wdocumentation] @param queueEnabled ~~~~~~~~~~~~~~~~~~^ /Users/vickky/Documents/flutter/.pub-cache/hosted/pub.dartlang.org/fluttertoast-7.0.4/ios/Classes/FluttertoastPlugin.m:20:23: warning: unused variable 'viewController' [-Wunused-variable] UIViewController *viewController = ^ /Users/vickky/Documents/flutter/.pub-cache/hosted/pub.dartlang.org/fluttertoast-7.0.4/ios/Classes/FluttertoastPlugin.m:99:21: warning: unused variable 'topPadding' [-Wunused-variable] CGFloat topPadding = window.safeAreaInsets.top; ^ /Users/vickky/Documents/flutter/.pub-cache/hosted/pub.dartlang.org/fluttertoast-7.0.4/ios/Classes/FluttertoastPlugin.m:100:21: warning: unused variable 'bottomPadding' [-Wunused-variable] CGFloat bottomPadding = window.safeAreaInsets.bottom; ^ /Users/vickky/Documents/flutter/.pub-cache/hosted/pub.dartlang.org/fluttertoast-7.0.4/ios/Classes/FluttertoastPlugin.m:73:19: warning: unused variable 'size' [-Wunused-variable] NSNumber *size = call.arguments[@"size"]; ^ 8 warnings generated. 6 warnings generated. /Users/vickky/Documents/flutter/.pub-cache/hosted/pub.dartlang.org/firebase_messaging-6.0.16/ios/Classes/FLTFirebaseMessagingPlugin.m:195:43: warning: 'FIRMessagingRemoteMessage' is deprecated: FCM direct channel is deprecated, please use APNs for downstream message handling. [-Wdeprecated-declarations] - (void)applicationReceivedRemoteMessage:(FIRMessagingRemoteMessage *)remoteMessage { ^ In module 'FirebaseMessaging' imported from /Users/vickky/Documents/project1/ios/Pods/Headers/Public/Firebase/Firebase.h:72: /Users/vickky/Documents/project1/ios/Pods/FirebaseMessaging/FirebaseMessaging/Sources/Public/FIRMessaging.h:219:1: note: 'FIRMessagingRemoteMessage' has been explicitly marked deprecated here __deprecated_msg( ^ In module 'UIKit' imported from /Users/vickky/Documents/project1/ios/Pods/Target Support Files/firebase_messaging/firebase_messaging-prefix.pch:2: In module 'Foundation' imported from /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS13.5.sdk/System/Library/Frameworks/UIKit.framework/Headers/UIKit.h:8: In module 'CoreFoundation' imported from /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS13.5.sdk/System/Library/Frameworks/Foundation.framework/Headers/Foundation.h :6: In module 'Darwin' imported from /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS13.5.sdk/System/Library/Frameworks/CoreFoundation.framework/Headers/CoreFoun dation.h:16: /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS13.5.sdk/usr/include/sys/cdefs.h:191:48: note: expanded from macro '__deprecated_msg' #define __deprecated_msg(_msg) attribute((deprecated(_msg))) ^ /Users/vickky/Documents/flutter/.pub-cache/hosted/pub.dartlang.org/firebase_messaging-6.0.16/ios/Classes/FLTFirebaseMessagingPlugin.m:307:24: warning: 'FIRMessagingRemoteMessage' is deprecated: FCM direct channel is deprecated, please use APNs for downstream message handling. [-Wdeprecated-declarations] didReceiveMessage:(FIRMessagingRemoteMessage *)remoteMessage { ^ In module 'FirebaseMessaging' imported from /Users/vickky/Documents/project1/ios/Pods/Headers/Public/Firebase/Firebase.h:72: /Users/vickky/Documents/project1/ios/Pods/FirebaseMessaging/FirebaseMessaging/Sources/Public/FIRMessaging.h:219:1: note: 'FIRMessagingRemoteMessage' has been explicitly marked deprecated here __deprecated_msg( ^ In module 'UIKit' imported from /Users/vickky/Documents/project1/ios/Pods/Target Support Files/firebase_messaging/firebase_messaging-prefix.pch:2: In module 'Foundation' imported from /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS13.5.sdk/System/Library/Frameworks/UIKit.framework/Headers/UIKit.h:8: In module 'CoreFoundation' imported from /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS13.5.sdk/System/Library/Frameworks/Foundation.framework/Headers/Foundation.h :6: In module 'Darwin' imported from /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS13.5.sdk/System/Library/Frameworks/CoreFoundation.framework/Headers/CoreFoun dation.h:16: /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS13.5.sdk/usr/include/sys/cdefs.h:191:48: note: expanded from macro '__deprecated_msg' #define __deprecated_msg(_msg) attribute((deprecated(_msg))) ^ /Users/vickky/Documents/flutter/.pub-cache/hosted/pub.dartlang.org/firebase_messaging-6.0.16/ios/Classes/FLTFirebaseMessagingPlugin.m:141:30: warning: 'shouldEstablishDirectChannel' is deprecated: FCM direct channel is deprecated, please use APNs channel for downstream message delivery. [-Wdeprecated-declarations] [FIRMessaging messaging].shouldEstablishDirectChannel = true; ^ In module 'FirebaseMessaging' imported from /Users/vickky/Documents/project1/ios/Pods/Headers/Public/Firebase/Firebase.h:72: /Users/vickky/Documents/project1/ios/Pods/FirebaseMessaging/FirebaseMessaging/Sources/Public/FIRMessaging.h:283:56: note: 'shouldEstablishDirectChannel' has been explicitly marked deprecated here @property(nonatomic) BOOL shouldEstablishDirectChannel DEPRECATED_MSG_ATTRIBUTE( ^ In module 'UIKit' imported from /Users/vickky/Documents/project1/ios/Pods/Target Support Files/firebase_messaging/firebase_messaging-prefix.pch:2: In module 'Foundation' imported from /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS13.5.sdk/System/Library/Frameworks/UIKit.framework/Headers/UIKit.h:8: In module 'CoreFoundation' imported from /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS13.5.sdk/System/Library/Frameworks/Foundation.framework/Headers/Foundation.h :6: In module 'Darwin' imported from /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS13.5.sdk/System/Library/Frameworks/CoreFoundation.framework/Headers/CoreFoun dation.h:16: /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS13.5.sdk/usr/include/AvailabilityMacros.h:182:64: note: expanded from macro 'DEPRECATED_MSG_ATTRIBUTE' #define DEPRECATED_MSG_ATTRIBUTE(s) attribute((deprecated(s))) ^ /Users/vickky/Documents/flutter/.pub-cache/hosted/pub.dartlang.org/firebase_messaging-6.0.16/ios/Classes/FLTFirebaseMessagingPlugin.m:196:52: warning: 'appData' is deprecated [-Wdeprecated-declarations] [self didReceiveRemoteNotification:remoteMessage.appData]; ^ In module 'FirebaseMessaging' imported from /Users/vickky/Documents/project1/ios/Pods/Headers/Public/Firebase/Firebase.h:72: /Users/vickky/Documents/project1/ios/Pods/FirebaseMessaging/FirebaseMessaging/Sources/Public/FIRMessaging.h:226:62: note: 'appData' has been explicitly marked deprecated here @property(nonatomic, readonly, strong) NSDictionary *appData DEPRECATED_ATTRIBUTE; ^ In module 'UIKit' imported from /Users/vickky/Documents/project1/ios/Pods/Target Support Files/firebase_messaging/firebase_messaging-prefix.pch:2: In module 'Foundation' imported from /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS13.5.sdk/System/Library/Frameworks/UIKit.framework/Headers/UIKit.h:8: In module 'CoreFoundation' imported from /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS13.5.sdk/System/Library/Frameworks/Foundation.framework/Headers/Foundation.h :6: In module 'Darwin' imported from /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS13.5.sdk/System/Library/Frameworks/CoreFoundation.framework/Headers/CoreFoun dation.h:16: /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS13.5.sdk/usr/include/AvailabilityMacros.h:180:60: note: expanded from macro 'DEPRECATED_ATTRIBUTE' #define DEPRECATED_ATTRIBUTE attribute((deprecated)) ^ /Users/vickky/Documents/flutter/.pub-cache/hosted/pub.dartlang.org/firebase_messaging-6.0.16/ios/Classes/FLTFirebaseMessagingPlugin.m:306:1: warning: implementing deprecated method [-Wdeprecated-implementations] - (void)messaging:(FIRMessaging *)messaging ^ In module 'FirebaseMessaging' imported from /Users/vickky/Documents/project1/ios/Pods/Headers/Public/Firebase/Firebase.h:72: /Users/vickky/Documents/project1/ios/Pods/FirebaseMessaging/FirebaseMessaging/Sources/Public/FIRMessaging.h:253:1: note: method 'messaging:didReceiveMessage:' declared here - (void)messaging:(FIRMessaging *)messaging ^ /Users/vickky/Documents/flutter/.pub-cache/hosted/pub.dartlang.org/firebase_messaging-6.0.16/ios/Classes/FLTFirebaseMessagingPlugin.m:308:63: warning: 'appData' is deprecated [-Wdeprecated-declarations] [_channel invokeMethod:@"onMessage" arguments:remoteMessage.appData]; ^ In module 'FirebaseMessaging' imported from /Users/vickky/Documents/project1/ios/Pods/Headers/Public/Firebase/Firebase.h:72: /Users/vickky/Documents/project1/ios/Pods/FirebaseMessaging/FirebaseMessaging/Sources/Public/FIRMessaging.h:226:62: note: 'appData' has been explicitly marked deprecated here @property(nonatomic, readonly, strong) NSDictionary *appData DEPRECATED_ATTRIBUTE; ^ In module 'UIKit' imported from /Users/vickky/Documents/project1/ios/Pods/Target Support Files/firebase_messaging/firebase_messaging-prefix.pch:2: In module 'Foundation' imported from /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS13.5.sdk/System/Library/Frameworks/UIKit.framework/Headers/UIKit.h:8: In module 'CoreFoundation' imported from /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS13.5.sdk/System/Library/Frameworks/Foundation.framework/Headers/Foundation.h :6: In module 'Darwin' imported from /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS13.5.sdk/System/Library/Frameworks/CoreFoundation.framework/Headers/CoreFoun dation.h:16: /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS13.5.sdk/usr/include/AvailabilityMacros.h:180:60: note: expanded from macro 'DEPRECATED_ATTRIBUTE' #define DEPRECATED_ATTRIBUTE attribute((deprecated)) ^ 6 warnings generated. 1 warning generated. Failed to subset font; aborting.

Command PhaseScriptExecution failed with a nonzero exit code
note: Using new build system
note: Building targets in parallel
note: Planning build
note: Constructing build description
warning: Skipping duplicate build file in Copy Headers build phase:
/Users/vickky/Documents/project1/ios/Pods/TOCropViewController/Objective-C/TOCropViewController/Models/TOActivityCroppedImageProvider.h

(in target 'TOCropViewController' from project 'Pods') warning: Skipping duplicate build file in Copy Headers build phase: /Users/vickky/Documents/project1/ios/Pods/TOCropViewController/Objective-C/TOCropViewController/Views/TOCropOverlayView.h (in target 'TOCropViewController' from project 'Pods') warning: Skipping duplicate build file in Copy Headers build phase: /Users/vickky/Documents/project1/ios/Pods/TOCropViewController/Objective-C/TOCropViewController/Models/TOCroppedImageAttributes.h (in target 'TOCropViewController' from project 'Pods') warning: Skipping duplicate build file in Copy Headers build phase: /Users/vickky/Documents/project1/ios/Pods/TOCropViewController/Objective-C/TOCropViewController/Views/TOCropScrollView.h (in target 'TOCropViewController' from project 'Pods') warning: Skipping duplicate build file in Copy Headers build phase: /Users/vickky/Documents/project1/ios/Pods/TOCropViewController/Objective-C/TOCropViewController/Views/TOCropToolbar.h (in target 'TOCropViewController' from project 'Pods') warning: Skipping duplicate build file in Copy Headers build phase: /Users/vickky/Documents/project1/ios/Pods/TOCropViewController/Objective-C/TOCropViewController/Views/TOCropView.h (in target 'TOCropViewController' from project 'Pods') warning: Skipping duplicate build file in Copy Headers build phase: /Users/vickky/Documents/project1/ios/Pods/TOCropViewController/Objective-C/TOCropViewController/TOCropViewController.h (in target 'TOCropViewController' from project 'Pods') warning: Skipping duplicate build file in Copy Headers build phase: /Users/vickky/Documents/project1/ios/Pods/TOCropViewController/Objective-C/TOCropViewController/Models/TOCropViewControllerTransitioning.h (in target 'TOCropViewController' from project 'Pods')

Encountered error while building for device.

Answer 1

This is an issue with the image cropper see here: not able to build project in iOS

The way I solved it was:

• I deleted the Pods folder & Podfile & Podfile.lock under the iOS folder
• I ran flutter clean & flutter packages get

If it doesn't work, try the stable channel flutter channel stable, and then go back to flutter channel master and repeat the steps above in each step. Sometimes switching channels fixes things for some reason.