我将我的应用程序更新为网络核心3，运行应用程序时出现错误 关于Automapper（至少我是说）

我已经更新了运行dotnet -outdate的相对库，然后更新了依赖项

Unhandled exception. System.aggregateexception: Some services are not able to be constructed (Error while validating the service descriptor 'ServiceType: MyDemo.Models.Mapping.Resolvers.DefaultResolver Lifetime: Transient ImplementationType: MyDemo.Models.Mapping.Resolvers.DefaultResolver': Unable to resolve service for type 'System.String' while attempting to activate 'MyDemo.Models.Mapping.Resolvers.DefaultResolver'.) (Error while validating the service descriptor 'ServiceType: MyDemo.Models.Mapping.Resolvers.MoneyResolver Lifetime: Transient ImplementationType: MyDemo.Models.Mapping.Resolvers.MoneyResolver': Unable to resolve service for type 'System.String' while attempting to activate 'MyDemo.Models.Mapping.Resolvers.MoneyResolver'.) (Error while validating the service descriptor 'ServiceType: MyDemo.Models.Mapping.Resolvers.TimeSpanResolver Lifetime: Transient ImplementationType: MyDemo.Models.Mapping.Resolvers.TimeSpanResolver': Unable to resolve service for type 'System.String' while attempting to activate 'MyDemo.Models.Mapping.Resolvers.TimeSpanResolver'.)
 ---> System.InvalidOperationException: Error while validating the service descriptor 'ServiceType: MyDemo.Models.Mapping.Resolvers.DefaultResolver Lifetime: Transient ImplementationType: MyDemo.Models.Mapping.Resolvers.DefaultResolver': Unable to resolve service for type 'System.String' while attempting to activate 'MyDemo.Models.Mapping.Resolvers.DefaultResolver'.
 ---> System.InvalidOperationException: Unable to resolve service for type 'System.String' while attempting to activate 'MyDemo.Models.Mapping.Resolvers.DefaultResolver'.
   at microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteFactory.CreateArgumentCallSites(Type serviceType,Type implementationType,CallSiteChain callSiteChain,ParameterInfo[] parameters,Boolean throwIfCallSiteNotFound)
   at microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteFactory.CreateConstructorCallSite(ResultCache lifetime,Type serviceType,CallSiteChain callSiteChain)
   at microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteFactory.TryCreateExact(ServiceDescriptor descriptor,Int32 slot)
   at microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteFactory.getcallSite(ServiceDescriptor serviceDescriptor,CallSiteChain callSiteChain)
   at microsoft.Extensions.DependencyInjection.ServiceLookup.ServiceProviderEngine.ValidateService(ServiceDescriptor descriptor)

    services.AddAutoMapper(typeof(Startup));

似乎是依赖项注入错误，但无法理解