找不到asp.net Identity ResetPassword UserId

Question

我的重置密码功能已停止工作，我不知道我做了什么，因为它昨天正常工作。

我可以点击我在电子邮件中收到的链接然后我到达asp.net错误页面

找不到UserId。 System.InvalidOperationException：找不到UserId。

            var manager = Context.GetOwinContext().GetUserManager<ApplicationUserManager>();
            ApplicationUser user = manager.FindByName(Email.Text);

if (user == null || !manager.IsEmailConfirmed(user.Id))
            {
                FailureText.Text = "Användaren existerar inte eller så är inte användarkontot bekräftat, bekräfta konto och försök sedan igen.";
                ErrorMessage.Visible = true;
                ConfirmAccount.Visible = true;
                return;
            }

            string code = manager.GeneratePasswordResetToken(user.Id);
            string callbackUrl = IdentityHelper.GetResetPasswordRedirectUrl(code, Request);
            manager.SendEmail(user.Id, "Återställ Lösenord", "Återställ lösenord klicka <a href=\"" + callbackUrl + "\">Här</a>.");

电子邮件

        public Task SendAsync(IdentityMessage message)
    {
        // Plug in your email service here to send an email.

        try
        {

            MailMessage msg = new MailMessage();
            msg.From = new MailAddress("email");
            msg.To.Add(new MailAddress(message.Destination));
            msg.Subject = message.Subject;
            msg.Body = message.Body;

            var smtpClient = new SmtpClient();
                smtpClient.EnableSsl = false;

            return smtpClient.SendMailAsync(msg);
        }
        catch (Exception ex)
        {

            throw ex;
        }


    }

}

EmailConfirmation几乎相同并且正在运行：

        string code = manager.GenerateEmailConfirmationToken(user.Id);
        string callbackUrl = IdentityHelper.GetUserConfirmationRedirectUrl(code, user.Id, Request);
        manager.SendEmail(user.Id, "Bekräfta ditt konto",  "Bekräfta genom att klicka <a href=\"" + callbackUrl + "\">Här</a>.");