The error was No member named 'Contexts' in namespace 'il2cpp::icalls::mscorlib::System::Runtime::Remoting'
But we did not found any solution for this I have gone through unity issue tracker please check the link as a mentioned in a link same error I am also getting (https://issuetracker.unity3d.com/issues/mono-runtime-upgrade-project-fails-to-build-for-ios-in-xcode)
I need some help because I am not a developer
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