blazor server file upload silently crashes server

I'm testing image upload on my blazor server application. For this, my .razor component looks like this:

@page "/uploadtest"

<h1>Upload Example</h1>
<AuthorizeView>
    <Authorized>
        <p>A simple example with a model, which can upload images</p>
        <label>
            Load Images:
            <InputFile OnChange="@UploadImages" multiple accept=".jpg,.jpeg,.png" />
        </label>

    </Authorized>
    <NotAuthorized>
        <p>To use this application, please <a href="Identity/Account/Login">log in</a> or <a href="Identity/Account/Register">register</a> a new account! </p>
    </NotAuthorized>
</AuthorizeView>

I put the code-behind in a separate .razor.cs file, the class looks like this:

public partial class UploadExample: ComponentBase
{ 
    #region Protected Properties
    [Inject]
    protected AuthenticationStateProvider AuthenticationStateProvider { get; private set; }

    [Inject]
    protected IWebHostEnvironment WebHostEnvironment { get; private set; }
    #endregion

    #region Public Methods
    /// <summary>
    /// File upload
    /// Only images of type .jpg and png are allowed here.
    /// </summary>
    /// <param name="e"></param>
    /// <returns></returns>
    protected async Task UploadImages(InputFileChangeEventArgs ifc)
    {
        var authState = await AuthenticationStateProvider.GetAuthenticationStateAsync();
        var user = authState.User;

        if (user.Identity.IsAuthenticated)
        {
            try
            {
                string userId = user.FindFirst(c => c.Type.Contains("nameidentifier"))?.Value;
                string currentTime = DateTime.Now.ToString("yyyy-dd-M--HH-mm-ss");
                string path = Path.Combine(WebHostEnvironment.WebRootPath, $@"UserData/{userId}/UploadTest/{currentTime}");
                Directory.CreateDirectory(path);
                var files = ifc.GetMultipleFiles();
                foreach (var file in files)
                {
                    var filePath = Path.Combine(path, file.Name);
                    await using FileStream fs = new(filePath, FileMode.Create);
                    await file.OpenReadStream().CopyToAsync(fs);
                }
            }
            catch (Exception e)
            {
                Console.WriteLine(e.Message);
            }
        }
    }
    #endregion
}

Here are my issues:

• For some reason after the UploadImages() function is executed, the application silently crashes. I can't find anything useful in the console output nor are any exceptions thrown, it just stops with code -1. The files however are successfully uploaded to the expected folder. Furthermore, the crash seems to be independent from the function.
• The code currently stores the files in the wwwroot folder, which I am sure is a bad idea. I already have a data access layer, which is a separate class library and handles all the database stuff. Basically, I want only the path to the images stored in the database, but the data access library should still handle storage of the a images. Is it common to give IBrowserFile objects to a separate class library? If not, how would the data be sent to the data access layer?

Edit In the Dev-Options of my browser, I get the following error:

Error: Connection disconnected with error 'Error: WebSocket closed with status code: 1006 ().'.

as soon as I select any file for upload. I tested different things (with/without authorization, calling/not calling the UploadImages() functions, etc...)