Dropzone doesnt pass files

Hi,

been on this for hours... I'm trying to Upload multiple pictures with dropzone. My Upload Action in controller gets called when dragging in a picture, but doesn't have any files in "List<IFormFile> files".

Here is my controller action method & cshtml form:

public async Task<IActionResult> UploadData(List<IFormFile> files)
        {
            ...

            return RedirectToAction("DownloadFile", "Download");
        }<form id="upload-widget" method="post" action="@Url.Action("UploadData", "Home")" class="dropzone dz-clickable"><div class="dz-message"><p>Drop photos or click to upload.</p></div></form>