Lab not getting complete even it is correct

I am working on C# / ASP.NET API from the I am doing ASP.NET Core API: Username Enumeration lab, this lab task 1 is always showing incomplete even after  I am generating correct results 

[HttpPost("login")]

public ActionResult<LoginResponse> LoginUser(LoginRequest request)

 {

var user = _repository.GetUserByEmail(request.Email); 

var passwordValid = _hashingService.VerifyPassword( request.Password, user.Password );

 if (user == null || !passwordValid) {

return Unauthorized(); }

 return new LoginResponse { Jwt = _jwtService.GenerateJwt(user.Id, user.Email) };

}

Could you please help? I need to complete this today?

Regards

Nagesh