Set HttpContext Response Cookie in Blazor without API

Issue with Auth princliples not being able to write to response in blazor app through an injected service

LoginModal:

@using Microsoft.AspNetCore.Components.Authorization
@using MtgDeckBuilderServices
@inject NavigationManager Navigation
@inject IMtgApiAuthorizationService AuthService
@inject IHttpContextAccessor HttpContextAccessor

@if (IsOpen)
{
    <div class="modal-backdrop fade show"></div>
    <div class="modal show d-block" tabindex="-1">
        <div class="modal-dialog">
            <div class="modal-content">
                <div class="modal-header">
                    <h5 class="modal-title">Log In</h5>
                    <button type="button" class="btn-close" @onclick="Close"></button>
                </div>
                <div class="modal-body">
                    <div class="mb-3">
                        <label for="username" class="form-label">Username</label>
                        <input id="username" class="form-control" @bind="Username" />
                    </div>
                    <div class="mb-3">
                        <label for="password" class="form-label">Password</label>
                        <input id="password" type="password" class="form-control" @bind="Password" />
                    </div>
                    @if (!string.IsNullOrEmpty(ErrorMessage))
                    {
                        <div class="alert alert-danger">@ErrorMessage</div>
                    }
                </div>
                <div class="modal-footer">
                    <button class="btn btn-primary" @onclick="Login">Log In</button>
                    <button class="btn btn-secondary" @onclick="Close">Cancel</button>
                </div>
            </div>
        </div>
    </div>
}

@code {
    [Parameter] public bool IsOpen { get; set; }
    [Parameter] public EventCallback<bool> IsOpenChanged { get; set; }
    [Parameter] public EventCallback OnLoginSuccess { get; set; }

    private string Username { get; set; }
    private string Password { get; set; }
    private string ErrorMessage { get; set; }

    private async Task Login()
    {
        ErrorMessage = string.Empty;
        var httpContext = HttpContextAccessor.HttpContext;

        if (httpContext == null)
        {
            ErrorMessage = "Unable to access HttpContext.";
            return;
        }

        var result = await AuthService.AuthenticateAndSignInAsync(httpContext, Username, Password);

        if (result != null)
        {
            await IsOpenChanged.InvokeAsync(false);
            await OnLoginSuccess.InvokeAsync();
        }
        else
        {
            ErrorMessage = "Invalid credentials.";
        }
    }

    private async Task Close()
    {
        await IsOpenChanged.InvokeAsync(false);
    }
}

Then in the Auth Service, this is relevant:

public void SetAuthCookie(HttpContext context, string token)
{
    var options = new CookieOptions
            {
                Expires = DateTimeOffset.UtcNow.AddDays(7),
                HttpOnly = true,
                IsEssential = true,
                Domain = context.Request.Host.Host,
                SameSite = SameSiteMode.Strict,
                Secure = true
            };
    #if DEBUG
    options.Secure = false;
    #endif

    try
    {
        context.Response.Cookies.Append("mtgdb_auth_cookie", token, options);
    }
    catch (Exception ex)
    {
    }
}

public async Task<UserCredential?> AuthenticateAndSignInAsync(HttpContext context, string username, string password)
{
    var userCredential = await AuthenticateAsync(username, password);

    if (userCredential == null)
        return null;

    var token = CreateToken(context, userCredential);

    SetAuthCookie(context, token);

    userCredential.TokenExpiration = DateTime.UtcNow.AddDays(7).ToString();
    userCredential.AuthData = token;

    return userCredential;
}

Is this possible to do without an API call? Keep in mind this service works perfectly in an ASP.NET Core 8 Web API.

The problem tracks to this (response not writable... lmao it hasn't returned yet, what a joke).

context.Response.Cookies.Append("mtgdb_auth_cookie", token, options);