當我嘗試使用 laravel ajax 中的下載按鈕下載文件時，它無法正常工作，并且我無法下載文件。下面是我的代碼：<button type="button" request_id="'.$data->id.'" class="btn btn-success download_request_btn" > Download </button>';控制器：public function downloadReport(Request $request)    {        $request_id = $request->request_id;        $downloadReport = Upload::where('id', $request_id)->first();        $upload_report = $downloadReport->upload_report;        $headers = array(            'Content-Type: application/pdf',            'Content-Type: application/docx',          );        $url= url('storage/documents/request/'. $upload_report);        return response()->download($url);    }阿賈克斯：$(document).on('click', '.download_request_btn', function(){            var request_id = $(this).attr('request_id');           console.log(request_id);           var formData = new FormData();            formData.append('request_id',request_id);            jQuery.ajax({                type: "post",                url: site_url+"/DownloadAjax",                data: formData,                contentType:false,                processData:false,                success: function (res) {                }            });        });