Can you please provide documentation on how to implement Ajax with the PreConfirm Callback?

[Oheneba-Amissah Felix]

Awesome Blazor wrapper for the SweetAlert library.

I'd like to use the Ajax feature but the code below (sweetAlert2 Ajax Sample) doesn't work.

 async Task ShowGithubAvatar()
    {
        try
        {
            var result = await Swal.FireAsync(new SweetAlertOptions
            {
                Title = "Submit your Github username",
                Input = SweetAlertInputType.Text,
                InputAttributes = new Dictionary<string, string> { { "autoCapitalize", "off" } },
                ShowCancelButton = true,
                ConfirmButtonText = "Look Up",
                ShowLoaderOnConfirm = true,
                PreConfirm = new PreConfirmCallback(async (username) => {
                    var response = await Http.GetAsync($"https://api.github.com/users/{username}");
                    response.EnsureSuccessStatusCode();
                    return await response.Content.ReadAsStringAsync();
                }, this),
                AllowOutsideClick = await Swal.IsLoadingAsync()
            });

            if (!string.IsNullOrEmpty(result.Value))
            {
                dynamic githubProfile = JToken.Parse(result.Value);

                await Swal.FireAsync(new SweetAlertOptions
                {
                    Title = $"{githubProfile.login}'s avatar",
                    ImageUrl = githubProfile.avatar_url
                });
            }
        }
        catch (Exception ex)
        {
            await Swal.ShowValidationMessageAsync($"Request failed: {ex.Message}");
        }
    }

Can you please provide some clarification around this?