ERROR "the model item passed into the dictionary is of type 'system.collections.generic.list"

public class AboutUsController : Controller
    {
       
        public ActionResult Index()
        {

            CMSAboutus dbhandle = new CMSAboutus();
            ModelState.Clear();
            return View(dbhandle.GetAboutTitlepage().ToList());
}

My Class 

public List<CMSAboutus> GetAboutTitlepage()
       {
           connection();
           List<CMSAboutus> studentlist = new List<CMSAboutus>();

           SqlCommand cmd = new SqlCommand("GetAboutpagetitle", con);
           cmd.CommandType = CommandType.StoredProcedure;
         //  cmd.Parameters.AddWithValue("@ID", smodel.id);
           SqlDataAdapter sd = new SqlDataAdapter(cmd);
           DataTable dt = new DataTable();

           con.Open();
           sd.Fill(dt);
           con.Close();

           foreach (DataRow dr in dt.Rows)
           {
               studentlist.Add(
                   new CMSAboutus
                   {
                       // Id = Convert.ToInt32(dr["Id"]),
                       Section_Title = Convert.ToString(dr["Section_Title"]),
                       Title_desc = Convert.ToString(dr["Title_desc"]),

                   });
           }
           return studentlist;
       }

<pre>@using GlobalxVisa_Immigration.Areas.Admin.Models
@model CMSAboutus

@{
    ViewBag.Title = "Index";
    Layout = "~/Areas/Admin/Views/Shared/_LayoutRegister.cshtml";
}

<div class="container">
    <br />

    <div class="row">
        <div class="modal-content">
            <div class="card-header  bg-primary"><span style="color:white;">About Page Title</span></div>

            <div class="card-body">
               
                    
                        <section>
                            @using (Html.BeginForm("Index", "AboutUs", new { ReturnUrl = ViewBag.ReturnUrl }, FormMethod.Post, new { @class = "form-horizontal", role = "form" }))
            {
                                @Html.AntiForgeryToken()

                                <h5>
                                    class="fa fa-link">
                                   
                                </h5>

                                <hr />
                                if (Model.GetAboutTitlepage() != null && Model.GetAboutTitlepage().Count > 0)
                                {