Getting error when trying to run application related to UserManager, IdentityRole etc

Question

Getting error InvalidOperationException: Unable to resolve service for type 'Microsoft.AspNetCore.Identity.UserManager`1[Microsoft.AspNetCore.Identity.IdentityUser]' while attempting to activate 'NostedServicePro.Controllers.BrukerController'.

BrukerController contructor (Bruker is the same as Account if that helps)

public class BrukerController : Controller
    {
        private readonly ServiceProDbContex _dbContext;
        private readonly SignInManager<IdentityUser> _signInManager;
        private readonly ILogger _logger;
        private readonly UserManager<IdentityUser> _userManager;
        private readonly IEmailSender _emailSender;


        public BrukerController(
                ServiceProDbContex dbContext,
                UserManager<IdentityUser> userManager,
                SignInManager<IdentityUser> signInManager,
                ILoggerFactory loggerFactory,
                IEmailSender emailSender)
        {
            _dbContext = dbContext;
            _signInManager = signInManager;
            _logger = loggerFactory.CreateLogger<BrukerController>();
            _userManager = userManager;
            _emailSender = emailSender;
        }

ConfigureServices method in startup.cs:

public void ConfigureServices(IServiceCollection services)
    {
        // ...

        // Configure the database context using the connection string from appsettings.json
        services.AddDbContext<ServiceProDbContex>(options =>
            options.UseMySql(Configuration.GetConnectionString("DefaultConnection"), ServerVersion.AutoDetect(Configuration.GetConnectionString("DefaultConnection"))));


        services.AddIdentity<NostedServicePro.Models.Bruker, IdentityRole>(options =>
        {
        options.User.RequireUniqueEmail = false;
         })
            .AddEntityFrameworkStores<ServiceProDbContex>()
            .AddDefaultTokenProviders();
        // ...
        services.AddAuthentication(options =>
        {
            options.DefaultScheme = IdentityConstants.ApplicationScheme;
            options.DefaultSignInScheme = IdentityConstants.ExternalScheme;
        }).AddIdentityCookies(options => { });

        services.AddAuthorization();


    }