URGENT HELP NEEDED FOR FLUTTER BUILD RELEASE

[Ramneek Kashyap]

I am facing the below issue with my flutter project. Whenever I run the command "flutter build ios" the below error is being faced.

Please guide me a resolution. It is about a week's time that been lost due to this issue.

I upgraded to the latest version of flutter then  this happend,

Error output from Xcode build:
↳
    2020-09-04 19:28:49.310 xcodebuild[12210:62950] 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.
    2020-09-04 19:28:49.310 xcodebuild[12210:62950] 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.
    2020-09-04 19:28:49.310 xcodebuild[12210:62950] 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.
    2020-09-04 19:28:49.310 xcodebuild[12210:62950] 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.
    2020-09-04 19:28:49.310 xcodebuild[12210:62950] 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.
    2020-09-04 19:28:49.310 xcodebuild[12210:62950] 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.
    2020-09-04 19:28:49.310 xcodebuild[12210:62950] 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.
    2020-09-04 19:28:49.310 xcodebuild[12210:62950] 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/ramneek/Documents/flutter/.pub-cache/hosted/pub.dartlang.org/fluttertoast-7.0.4/ios/Classes/FluttertoastPlugin.m:2:
    /Users/ramneek/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/ramneek/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/ramneek/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/ramneek/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/ramneek/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/ramneek/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/ramneek/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/ramneek/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/ramneek/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/ramneek/Documents/flutter/.pub-cache/hosted/pub.dartlang.org/fluttertoast-7.0.4/ios/Classes/FluttertoastPlugin.m:2:
    /Users/ramneek/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/ramneek/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/ramneek/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/ramneek/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/ramneek/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/ramneek/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/ramneek/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/ramneek/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/ramneek/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.
    /Users/ramneek/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/ramneek/Documents/firebaseproject/ios/Pods/Headers/Public/Firebase/Firebase.h:72:
    /Users/ramneek/Documents/firebaseproject/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/ramneek/Documents/firebaseproject/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/ramneek/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/ramneek/Documents/firebaseproject/ios/Pods/Headers/Public/Firebase/Firebase.h:72:
    /Users/ramneek/Documents/firebaseproject/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/ramneek/Documents/firebaseproject/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/ramneek/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/ramneek/Documents/firebaseproject/ios/Pods/Headers/Public/Firebase/Firebase.h:72:
    /Users/ramneek/Documents/firebaseproject/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/ramneek/Documents/firebaseproject/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/ramneek/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/ramneek/Documents/firebaseproject/ios/Pods/Headers/Public/Firebase/Firebase.h:72:
    /Users/ramneek/Documents/firebaseproject/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/ramneek/Documents/firebaseproject/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/ramneek/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/ramneek/Documents/firebaseproject/ios/Pods/Headers/Public/Firebase/Firebase.h:72:
    /Users/ramneek/Documents/firebaseproject/ios/Pods/FirebaseMessaging/FirebaseMessaging/Sources/Public/FIRMessaging.h:253:1: note: method 'messaging:didReceiveMessage:' declared
    here
    - (void)messaging:(FIRMessaging *)messaging
    ^
    /Users/ramneek/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/ramneek/Documents/firebaseproject/ios/Pods/Headers/Public/Firebase/Firebase.h:72:
    /Users/ramneek/Documents/firebaseproject/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/ramneek/Documents/firebaseproject/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.
    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/ramneek/Documents/firebaseproject/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/ramneek/Documents/firebaseproject/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/ramneek/Documents/firebaseproject/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/ramneek/Documents/firebaseproject/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/ramneek/Documents/firebaseproject/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/ramneek/Documents/firebaseproject/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/ramneek/Documents/firebaseproject/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/ramneek/Documents/firebaseproject/ios/Pods/TOCropViewController/Objective-C/TOCropViewController/Models/TOCropViewControllerTransitioning.h (in target
    'TOCropViewController' from project 'Pods')

Encountered error while building for device.

[Mohd. Asif]

Update all your dependecies(take backup first). 

-- check each plugin changelog and notice if there is any breaking change.

-- update info.plist file, if necessary.

-- after doing above stuff , do usual steps with project( flutter clean, pod install or pod update)

-- try to run it on simulator if it runs.

-- just open ios->runner -> xcodeproject in xcode. try to build.

--
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[Asif Mohammed]

Tr to run this command as well - 

flutter pub cache repair

To view this discussion on the web visit https://groups.google.com/d/msgid/flutter-dev/CAJgPjtb-UZ%2Bc57n0fG-97ahgYuSB76cA2D9b5v9QNdkUZHothg%40mail.gmail.com.