.net core Error
InvalidOperationException: Unable to resolve service for type 'Microsoft.AspNetCore.Identity.RoleManager
Microsoft.Extensions.DependencyInjection.ActivatorUtilities.ThrowHelperUnableToResolveService(Type type, Type requiredBy) what is the solution of this error?
1[Microsoft.AspNetCore.Identity.IdentityRole1[System.Int32]]' while attempting to activate 'Library.Controllers.AccountController'.Microsoft.Extensions.DependencyInjection.ActivatorUtilities.ThrowHelperUnableToResolveService(Type type, Type requiredBy) what is the solution of this error?
