Link Error in iphone device (armv7)

[byakkou]

I Found this error when i build your library in iphone device.

`/Volumes/Work/AyoApps/Ayo.IOS/obj/iPhone/Debug/device-builds/iphone5.2-10.3.2/mtouch-cache/registrar.m(7851,11): warning GD811092D: duplicate protocol definition of 'CALayerDelegate' is ignored Process exited with code 1, command: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang -framework AVFoundation -framework SystemConfiguration -framework CoreMedia -framework CloudKit -framework UserNotifications -framework AddressBook -framework AdSupport -framework StoreKit -F /Volumes/Work/AyoApps/Ayo.IOS/obj/iPhone/Debug/device-builds/iphone5.2-10.3.2/mtouch-cache -framework Hero -weak_framework Accounts -weak_framework CoreLocation -weak_framework Social -weak_framework Security -weak_framework QuartzCore -weak_framework CoreGraphics -weak_framework UIKit -weak_framework Foundation -weak_framework AudioToolbox -weak_framework CFNetwork -weak_framework CoreFoundation -weak_framework Foundation -Xlinker -rpath -Xlinker @executable_path/Frameworks /Volumes/Work/AyoApps/Ayo.IOS/obj/iPhone/Debug/device-builds/iphone5.2-10.3.2/mtouch-cache/armv7/Ayo.IOS.exe.o /Volumes/Work/AyoApps/Ayo.IOS/obj/iPhone/Debug/device-builds/iphone5.2-10.3.2/mtouch-cache/armv7/mscorlib.dll.o /Volumes/Work/AyoApps/Ayo.IOS/obj/iPhone/Debug/device-builds/iphone5.2-10.3.2/mtouch-cache/armv7/Xamarin.iOS.dll.o /Volumes/Work/AyoApps/Ayo.IOS/obj/iPhone/Debug/device-builds/iphone5.2-10.3.2/mtouch-cache/armv7/System.dll.o /Volumes/Work/AyoApps/Ayo.IOS/obj/iPhone/Debug/device-builds/iphone5.2-10.3.2/mtouch-cache/armv7/Mono.Security.dll.o /Volumes/Work/AyoApps/Ayo.IOS/obj/iPhone/Debug/device-builds/iphone5.2-10.3.2/mtouch-cache/armv7/System.Xml.dll.o /Volumes/Work/AyoApps/Ayo.IOS/obj/iPhone/Debug/device-builds/iphone5.2-10.3.2/mtouch-cache/armv7/System.Core.dll.o /Volumes/Work/AyoApps/Ayo.IOS/obj/iPhone/Debug/device-builds/iphone5.2-10.3.2/mtouch-cache/armv7/Firebase.CloudMessaging.dll.o /Volumes/Work/AyoApps/Ayo.IOS/obj/iPhone/Debug/device-builds/iphone5.2-10.3.2/mtouch-cache/armv7/Firebase.InstanceID.dll.o /Volumes/Work/AyoApps/Ayo.IOS/obj/iPhone/Debug/device-builds/iphone5.2-10.3.2/mtouch-cache/armv7/Firebase.Core.dll.o /Volumes/Work/AyoApps/Ayo.IOS/obj/iPhone/Debug/device-builds/iphone5.2-10.3.2/mtouch-cache/armv7/Firebase.Analytics.dll.o /Volumes/Work/AyoApps/Ayo.IOS/obj/iPhone/Debug/device-builds/iphone5.2-10.3.2/mtouch-cache/armv7/Ayo.Core.dll.o /Volumes/Work/AyoApps/Ayo.IOS/obj/iPhone/Debug/device-builds/iphone5.2-10.3.2/mtouch-cache/armv7/GalaSoft.MvvmLight.dll.o /Volumes/Work/AyoApps/Ayo.IOS/obj/iPhone/Debug/device-builds/iphone5.2-10.3.2/mtouch-cache/armv7/System.Net.Http.dll.o /Volumes/Work/AyoApps/Ayo.IOS/obj/iPhone/Debug/device-builds/iphone5.2-10.3.2/mtouch-cache/armv7/Firebase.dll.o /Volumes/Work/AyoApps/Ayo.IOS/obj/iPhone/Debug/device-builds/iphone5.2-10.3.2/mtouch-cache/armv7/Newtonsoft.Json.dll.o /Volumes/Work/AyoApps/Ayo.IOS/obj/iPhone/Debug/device-builds/iphone5.2-10.3.2/mtouch-cache/armv7/System.Xml.Linq.dll.o /Volumes/Work/AyoApps/Ayo.IOS/obj/iPhone/Debug/device-builds/iphone5.2-10.3.2/mtouch-cache/armv7/System.Runtime.Serialization.dll.o /Volumes/Work/AyoApps/Ayo.IOS/obj/iPhone/Debug/device-builds/iphone5.2-10.3.2/mtouch-cache/armv7/Microsoft.CSharp.dll.o /Volumes/Work/AyoApps/Ayo.IOS/obj/iPhone/Debug/device-builds/iphone5.2-10.3.2/mtouch-cache/armv7/Mono.CSharp.dll.o /Volumes/Work/AyoApps/Ayo.IOS/obj/iPhone/Debug/device-builds/iphone5.2-10.3.2/mtouch-cache/armv7/System.Reactive.Linq.dll.o /Volumes/Work/AyoApps/Ayo.IOS/obj/iPhone/Debug/device-builds/iphone5.2-10.3.2/mtouch-cache/armv7/System.Reactive.Interfaces.dll.o /Volumes/Work/AyoApps/Ayo.IOS/obj/iPhone/Debug/device-builds/iphone5.2-10.3.2/mtouch-cache/armv7/System.Reactive.Core.dll.o /Volumes/Work/AyoApps/Ayo.IOS/obj/iPhone/Debug/device-builds/iphone5.2-10.3.2/mtouch-cache/armv7/LiteDB.dll.o /Volumes/Work/AyoApps/Ayo.IOS/obj/iPhone/Debug/device-builds/iphone5.2-10.3.2/mtouch-cache/armv7/System.Reflection.TypeExtensions.dll.o /Volumes/Work/AyoApps/Ayo.IOS/obj/iPhone/Debug/device-builds/iphone5.2-10.3.2/mtouch-cache/armv7/GalaSoft.MvvmLight.Extras.dll.o /Volumes/Work/AyoApps/Ayo.IOS/obj/iPhone/Debug/device-builds/iphone5.2-10.3.2/mtouch-cache/armv7/Microsoft.Practices.ServiceLocation.dll.o /Volumes/Work/AyoApps/Ayo.IOS/obj/iPhone/Debug/device-builds/iphone5.2-10.3.2/mtouch-cache/armv7/GalaSoft.MvvmLight.Platform.dll.o /Volumes/Work/AyoApps/Ayo.IOS/obj/iPhone/Debug/device-builds/iphone5.2-10.3.2/mtouch-cache/armv7/Facebook.dll.o /Volumes/Work/AyoApps/Ayo.IOS/obj/iPhone/Debug/device-builds/iphone5.2-10.3.2/mtouch-cache/armv7/DACircularProgress.dll.o /Volumes/Work/AyoApps/Ayo.IOS/obj/iPhone/Debug/device-builds/iphone5.2-10.3.2/mtouch-cache/armv7/Xamarin.RangeSlider.iOS.dll.o /Volumes/Work/AyoApps/Ayo.IOS/obj/iPhone/Debug/device-builds/iphone5.2-10.3.2/mtouch-cache/armv7/Xamarin.RangeSlider.Common.dll.o /Volumes/Work/AyoApps/Ayo.IOS/obj/iPhone/Debug/device-builds/iphone5.2-10.3.2/mtouch-cache/armv7/Xam.Hero.dll.o /Volumes/Work/AyoApps/Ayo.IOS/obj/iPhone/Debug/device-builds/iphone5.2-10.3.2/mtouch-cache/armv7/registrar.o /Volumes/Work/AyoApps/Ayo.IOS/obj/iPhone/Debug/device-builds/iphone5.2-10.3.2/mtouch-cache/armv7/main.o /Volumes/Work/AyoApps/Ayo.IOS/obj/iPhone/Debug/device-builds/iphone5.2-10.3.2/mtouch-cache/FirebaseMessaging /Volumes/Work/AyoApps/Ayo.IOS/obj/iPhone/Debug/device-builds/iphone5.2-10.3.2/mtouch-cache/FirebaseInstanceID /Volumes/Work/AyoApps/Ayo.IOS/obj/iPhone/Debug/device-builds/iphone5.2-10.3.2/mtouch-cache/GTMSessionFetcher /Volumes/Work/AyoApps/Ayo.IOS/obj/iPhone/Debug/device-builds/iphone5.2-10.3.2/mtouch-cache/GoogleToolboxForMac /Volumes/Work/AyoApps/Ayo.IOS/obj/iPhone/Debug/device-builds/iphone5.2-10.3.2/mtouch-cache/FirebaseCore /Volumes/Work/AyoApps/Ayo.IOS/obj/iPhone/Debug/device-builds/iphone5.2-10.3.2/mtouch-cache/GoogleInterchangeUtilities /Volumes/Work/AyoApps/Ayo.IOS/obj/iPhone/Debug/device-builds/iphone5.2-10.3.2/mtouch-cache/GoogleSymbolUtilities /Volumes/Work/AyoApps/Ayo.IOS/obj/iPhone/Debug/device-builds/iphone5.2-10.3.2/mtouch-cache/FirebaseAnalytics /Volumes/Work/AyoApps/Ayo.IOS/obj/iPhone/Debug/device-builds/iphone5.2-10.3.2/mtouch-cache/Bolts.a /Volumes/Work/AyoApps/Ayo.IOS/obj/iPhone/Debug/device-builds/iphone5.2-10.3.2/mtouch-cache/FBSDKCoreKit.a /Volumes/Work/AyoApps/Ayo.IOS/obj/iPhone/Debug/device-builds/iphone5.2-10.3.2/mtouch-cache/FBSDKLoginKit.a /Volumes/Work/AyoApps/Ayo.IOS/obj/iPhone/Debug/device-builds/iphone5.2-10.3.2/mtouch-cache/FBSDKMessengerShareKit.a /Volumes/Work/AyoApps/Ayo.IOS/obj/iPhone/Debug/device-builds/iphone5.2-10.3.2/mtouch-cache/FBSDKShareKit.a /Library/Frameworks/Xamarin.iOS.framework/Versions/10.10.0.36/SDKs/MonoTouch.iphoneos.sdk/usr/lib/libmonosgen-2.0.a /Library/Frameworks/Xamarin.iOS.framework/Versions/10.10.0.36/SDKs/MonoTouch.iphoneos.sdk/usr/lib/libxamarin-debug.a -force_load /Volumes/Work/AyoApps/Ayo.IOS/obj/iPhone/Debug/device-builds/iphone5.2-10.3.2/mtouch-cache/libDACircularProgress.a -force_load /Library/Frameworks/Xamarin.iOS.framework/Versions/10.10.0.36/SDKs/MonoTouch.iphoneos.sdk/usr/lib/libapp.a -lsqlite3 -lz -lc++ -ObjC -lc++ -lsqlite3 -lz -ObjC -Wl,-pie -arch armv7 -miphoneos-version-min=10.0 -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS10.3.sdk -o /Volumes/Work/AyoApps/Ayo.IOS/bin/iPhone/Debug/device-builds/iphone5.2-10.3.2/Ayo.IOS.app/Ayo.IOS -liconv -u _FIRMessagingMessagesDeletedNotification -u _FIRMessagingSendErrorNotification -u _FIRMessagingSendSuccessNotification -u _xamarin_IntPtr_objc_msgSend_IntPtr -u _xamarin_IntPtr_objc_msgSendSuper_IntPtr -u _UIApplicationMain -u _xamarin_get_block_descriptor -u _xamarin_start_wwan -u _CreateZStream -u _CloseZStream -u _Flush -u _ReadZStream -u _WriteZStream -u _FBSDKAccessTokenDidChangeNotification -u _FBSDKAccessTokenChangeNewKey -u _FBSDKAccessTokenChangeOldKey -u _FBSDKAccessTokenDidChangeUserID -u _FBSDKAppEventNameAchievedLevel -u _FBSDKAppEventNameAddedPaymentInfo -u _FBSDKAppEventNameAddedToCart -u _FBSDKAppEventNameAddedToWishlist -u _FBSDKAppEventNameCompletedRegistration -u _FBSDKAppEventNameCompletedTutorial -u _FBSDKAppEventParameterNameContentID -u _FBSDKAppEventParameterNameContentType -u _FBSDKAppEventParameterNameCurrency -u _FBSDKAppEventParameterNameDescription -u _FBSDKAppEventNameInitiatedCheckout -u _FBSDKAppEventParameterNameLevel -u _FBSDKAppEventsLoggingResultNotification -u _FBSDKAppEventParameterNameMaxRatingValue -u _FBSDKAppEventParameterValueNo -u _FBSDKAppEventParameterNameNumItems -u _FBSDKAppEventsOverrideAppIDBundleKey -u _FBSDKAppEventParameterNamePaymentInfoAvailable -u _FBSDKAppEventNameRated -u _FBSDKAppEventParameterNameRegistrationMethod -u _FBSDKAppEventNameSearched -u _FBSDKAppEventParameterNameSearchString -u _FBSDKAppEventNameSpentCredits -u _FBSDKAppEventParameterNameSuccess -u _FBSDKAppEventNameUnlockedAchievement -u _FBSDKAppEventNameViewedContent -u _FBSDKAppEventParameterValueYes -u _FBSDKNonJSONResponseProperty -u _FBSDKProfileDidChangeNotification -u _FBSDKProfileChangeNewKey -u _FBSDKProfileChangeOldKey -u _FBSDKLoginErrorDomain -u _FBSDKShareErrorDomain -u _xamarin_timezone_get_data -u _xamarin_GetFolderPath -u _xamarin_log -u _kFIRInstanceIDScopeFirebaseMessaging -u _kFIRInstanceIDTokenRefreshNotification -u _mono_pmip Undefined symbols for architecture armv7: "OBJC_CLASS$_Hero", referenced from: objc-class-ref in registrar.o ld: symbol(s) not found for architecture armv7 clang : error : linker command failed with exit code 1 (use -v to see invocation)

MTOUCH : error MT5211: Native linking failed, undefined Objective-C class: Hero. The symbol '_OBJC_CLASS_$_Hero' could not be found in any of the libraries or frameworks linked with your application.
MTOUCH : error MT5202: Native linking failed. Please review the build log.`

Please fix this. thx in advance