Api v1 curl to Import CSV data to existing form dosent work

Hello, I am trying to import data to existing form but the command return me html code.
My link is
curl -X POST https://kc.humanitarianresponse.info/api/v1/forms/formid/csv_import -F csv_file=@F:\ff.csv -u user:password --ssl-no-revoke

when i valid the command i get this :

<!-- Le HTML5 shim, for IE6-8 support of HTML elements -->
<!--[if lt IE 9]>
<script src="//html5shim.googlecode.com/svn/trunk/html5.js"></script>
<![endif]-->

<!-- Le styles -->


    <link rel="icon" type="image/x-icon" href="/static/images/favicon.ico"/>
    <!-- iPhone + iPad icons -->
    <link rel="apple-touch-icon" sizes="57x57" href="/static/images/apple-icon-57x57.png">
    <link rel="apple-touch-icon" sizes="60x60" href="/static/images/apple-icon-60x60.png">
    <link rel="apple-touch-icon" sizes="72x72" href="/static/images/apple-icon-72x72.png">
    <link rel="apple-touch-icon" sizes="76x76" href="/static/images/apple-icon-76x76.png">
    <link rel="apple-touch-icon" sizes="114x114" href="/static/images/apple-icon-114x114.png">
    <link rel="apple-touch-icon" sizes="120x120" href="/static/images/apple-icon-120x120.png">
    <link rel="apple-touch-icon" sizes="144x144" href="/static/images/apple-icon-144x144.png">
    <link rel="apple-touch-icon" sizes="152x152" href="/static/images/apple-icon-152x152.png">
    <link rel="apple-touch-icon" sizes="180x180" href="/static/images/apple-icon-180x180.png">
    <!-- Android -->
    <link rel="icon" type="image/png" sizes="192x192"  href="/static/images/android-icon-192x192.png">
    <link rel="icon" type="image/png" sizes="32x32" href="/static/images/favicon-32x32.png">
    <link rel="icon" type="image/png" sizes="96x96" href="/static/images/favicon-96x96.png">
    <link rel="icon" type="image/png" sizes="16x16" href="/static/images/favicon-16x16.png">
    <!-- Microsoft -->
    <link rel="manifest" href="/static/images/manifest.json">
    <meta name="msapplication-TileColor" content="#ffffff">
    <meta name="msapplication-TileImage" content="/static/images/ms-icon-144x144.png">
    <meta name="theme-color" content="#ffffff">

    <link href="/static/css/phaseout/bootstrap.min.css" rel="stylesheet">
    <link href="/static/css/screen.css?v=20200829121939" rel="stylesheet">
    <link href="/static/css/ona-screen-overrides.css" rel="stylesheet">
    <link href="/static/css/font-awesome.min.css" rel="stylesheet">
    <!--[if lte IE 8]>
    <link href="/static/css/font-awesome-ie7.css" rel="stylesheet">
    <![endif]-->
    <link href="/static/bootstrap/css/bootstrap-responsive.min.css" rel="stylesheet">

    <link href="/static/css/kobo-branding.css" rel="stylesheet">
    <link href="/static/css/published_forms.css" rel="stylesheet">
    <link href="/static/css/data_pages.css" rel="stylesheet">
    <link href="/static/css/vex.css" rel="stylesheet">
    <link href="/static/css/vex-theme-kobo.css" rel="stylesheet">

    <link href="/static/css/footable.css" rel="stylesheet">

<!-- spot to insert stuff for google maps -->
    <body>
        <header class="header-bar">
            <div class="container__wide">
                <span class="header-bar__top-logo pull-right"></span>
                <a href="http://support.kobotoolbox.org/" class="header-bar__support pull-right" target="_blank"
                   title="Visit our self-help pages or ask a support question (opens in new tab)">Support</a>
            </div>
        </header>

500 Error

If this is a significant error that needs to be fixed, please send a support request to support@kobotoolbox.org with information about what triggered this error.

<!-- Le javascript -->
<script type="text/javascript" src="/jsi18n/"></script>
<script src="/static/js/jquery.min.js"></script>
<script src="/static/js/jquery-migrate.min.js"></script>
<script src="/static/js/jquery.tablesorter.min.js"></script>
<script src="/static/bootstrap/js/bootstrap.js"></script>
<script src="/static/bootstrap/js/bootstrapx-clickover.js"></script>
<script src="/static/bootstrap/js/bootstrapx-clickover-btns.js"></script>
<script src="/static/js/application.js?v=202003111451"></script>
<script src="/static/js/vex.combined.min.js"></script>
<script>vex.defaultOptions.className = 'vex-theme-kobo';</script>
<script src="/static/js/footable.min.js"></script>
<!--  -->
<script src="/static/js/kobo-branding.js"></script>

please can someone help me!!!

@alpariss, this post discussed previously should help you solve your issue:

Thanks,
So, It isnt media file that i want to send but i want to send data to existing form on server.