我正在 Dot Net core MVC 7 中实现身份。这是我正在遵循的教程。然后突然错误来了错误来了
An unhandled exception occurred while processing the request.
InvalidOperationException: Unable to resolve service for type 'Microsoft.AspNetCore.Identity.UserManager`1[Microsoft.AspNetCore.Identity.IdentityUser]' while attempting to activate 'LearnIdentity.Areas.Identity.Pages.Account.RegisterModel'.
Microsoft.Extensions.DependencyInjection.ActivatorUtilities.GetService(IServiceProvider sp, Type type, Type requiredBy, bool isDefaultParameterRequired)
我尝试一次又一次地重新观看视频。尝试过聊天 GTP。无法解决请帮助我 点击这里查看源代码