HttpContext возвращает значение null на странице входа в Blazor

На прошлой неделе я работал над проектом .net 8 своего веб-приложения blazor, и все работало нормально. Теперь я вернулся и больше не могу войти. Моя страница входа выдает ошибку.

Логин.razor:

@page "/Account/Login"
@layout EmptyLayout
@attribute [AllowAnonymous]

@using System.ComponentModel.DataAnnotations
@using AVAZicht.Components.Layout
@using Microsoft.AspNetCore.Authentication
@using Microsoft.AspNetCore.Identity
@using AVAZicht.Data

@inject SignInManager<ApplicationUser> SignInManager
@inject ILogger<Login> Logger
@inject NavigationManager NavigationManager
@inject IdentityRedirectManager RedirectManager

<PageTitle>Log in</PageTitle>

<div class = "container">
    <div class = "row justify-content-md-center align-items-center vh-100">
        <div class = "col-lg-4" align = "center">

            <img src = "images/ava_logo_transp.png" class = "w-75 mb-3" />

            <section class = "p-0">
                <StatusMessage Message = "@errorMessage" />
                <EditForm Model = "Input" method = "post" OnValidSubmit = "LoginUser" FormName = "login">
                    <DataAnnotationsValidator />
                    <ValidationSummary class = "text-danger" role = "alert" />
                    <div class = "form-floating mb-3">
                        <InputText @bind-Value = "Input.Email" class = "form-control" autocomplete = "username" aria-required = "true" placeholder = "[email protected]" />
                        <label for = "email" class = "form-label">Email</label>
                        <ValidationMessage For = "() => Input.Email" class = "text-danger" />
                    </div>
                    <div class = "form-floating mb-3">
                        <InputText type = "password" @bind-Value = "Input.Password" class = "form-control" autocomplete = "current-password" aria-required = "true" placeholder = "password" />
                        <label for = "password" class = "form-label">Password</label>
                        <ValidationMessage For = "() => Input.Password" class = "text-danger" />
                    </div>
                    <div class = "checkbox mb-3">
                        <label class = "form-label">
                            <InputCheckbox @bind-Value = "Input.RememberMe" class = "darker-border-checkbox form-check-input" />
                            Ingelogd blijven
                        </label>
                    </div>
                    <div>
                        <button type = "submit" class = "w-100 btn btn-lg btn-primary">Inloggen</button>
                    </div>
                </EditForm>
            </section>
        </div>
    </div>
</div>

@code {
    private string? errorMessage;

    [CascadingParameter]
    private HttpContext HttpContext { get; set; } = default!;

    [SupplyParameterFromForm]
    private InputModel Input { get; set; } = new();

    [SupplyParameterFromQuery]
    private string? ReturnUrl { get; set; }

    protected override async Task OnInitializedAsync()
    {
        if (HttpMethods.IsGet(HttpContext.Request.Method))
        {
            // Clear the existing external cookie to ensure a clean login process
            await HttpContext.SignOutAsync(IdentityConstants.ExternalScheme);
        }

    }

    public async Task LoginUser()
    {
        // This doesn't count login failures towards account lockout
        // To enable password failures to trigger account lockout, set lockoutOnFailure: true
        var result = await SignInManager.PasswordSignInAsync(Input.Email, Input.Password, Input.RememberMe, lockoutOnFailure: false);
        if (result.Succeeded)
        {
            Logger.LogInformation("User logged in.");
            RedirectManager.RedirectTo(ReturnUrl);
        }
        else if (result.RequiresTwoFactor)
        {
            RedirectManager.RedirectTo(
                "Account/LoginWith2fa",
                new() { ["returnUrl"] = ReturnUrl, ["rememberMe"] = Input.RememberMe });
        }
        else if (result.IsLockedOut)
        {
            Logger.LogWarning("User account locked out.");
            RedirectManager.RedirectTo("Account/Lockout");
        }
        else
        {
            errorMessage = "Error: Invalid login attempt.";
        }
    }

    private sealed class InputModel
    {
        [Required]
        [EmailAddress]
        public string Email { get; set; } = "";

        [Required]
        [DataType(DataType.Password)]
        public string Password { get; set; } = "";

        [Display(Name = "Remember me?")]
        public bool RememberMe { get; set; }
    }
}

Ошибка, которую я получаю:

System.NullReferenceException: 'Object reference not set to an instance of an object.'

AVAZicht.Components.Account.Pages.Login.HttpContext.get returned null.

Я создал чистый проект Blazor Web App .net 8 с отдельными учетными записями в качестве типа аутентификации, и он работает отлично. Я просмотрел каждую страницу, которую он использует, перейдя на страницу входа в систему.

У кого-нибудь есть советы?