Hi guys I am new to ASP.NET MVC I am getting the error please solve this

public class StudentViewModel
  {
      [Key]
      public int StudentID { get; set; }
      [StringLength(50)]
      public string FirstName { get; set; }
      [StringLength(50)]
      public string LastName { get; set; }
      [StringLength(50)]
      public string FatherName { get; set; }
      [StringLength(300)]
      public string Address { get; set; }

      public DateTime DOB { get; set; }
      [StringLength(1)]
      public char Gender { get; set; }
      [StringLength(1)]
      public char caste { get; set; }
      [StringLength(11)]
      public string MobileNo { get; set; }
      [StringLength(100)]
      public string CourseName { get; set; }
      [StringLength(50)]
      public string Duration { get; set; }
      [StringLength(50)]
      public string Timing { get; set; }
      public String Institute { get; set; }
      public int HighestQualification { get; set; }
      public string Standard { get; set; }
      [StringLength(100)]
      public string Subject { get; set; }
      [StringLength(100)]
      public string SchoolName { get; set; }
public virtual List<Student_Computer> ComputerStudents { get; set; }
      public virtual List<Student_tution > TutionStudents { get; set; }
  }

[Table("ComputerStudent")]
  public class Student_Computer
  {
      [Key]
      public int StudentID { get; set; }
      [StringLength (50)]
      public string  FirstName { get; set; }
      [StringLength(50)]
      public string LastName { get; set; }
      [StringLength(50)]
      public string FatherName { get; set; }
      [StringLength(300)]
      public string Address { get; set; }

      public DateTime  DOB { get; set; }
     [StringLength(1)]
      public char  Gender { get; set; }
      [StringLength(1)]
      public char caste { get; set; }
      [StringLength(11)]
      public string MobileNo { get; set; }
      [StringLength(100)]
      public string CourseName { get; set; }
      [StringLength(50)]
      public string Duration { get; set; }
      [StringLength(50)]
      public string Timing { get; set; }
      public String Institute { get; set; }
      public int HighestQualification { get; set; }


  }

[Table("TutionStudent")]
  public class Student_tution
  {
      [Key]
      public int StudentID { get; set; }
      [StringLength(50)]
      public string FirstName { get; set; }
      [StringLength(50)]
      public string LastName { get; set; }
      [StringLength(50)]
      public string FatherName { get; set; }
      [StringLength(300)]
      public string Address { get; set; }

      public DateTime DOB { get; set; }
      [StringLength(1)]
      public char Gender { get; set; }
      [StringLength(1)]
      public char caste { get; set; }
      [StringLength(11)]
      public string MobileNo { get; set; }
      [StringLength(10)]
      public string Standard { get; set; }
      [StringLength(100)]
      public string Subject { get; set; }
      [StringLength(100)]
      public string SchoolName { get; set; }
      [StringLength(50)]
      public string Timing { get; set; }



  }

public class StudentDBContext :DbContext
    {
        public StudentDBContext()
            : base("name=MultisoftEntities")
        {
        }

        protected override void OnModelCreating(DbModelBuilder modelBuilder)
        {
            throw new UnintentionalCodeFirstException();
        }

        public virtual  DbSet<Student_Computer> Student_Computer { get; set; }
        public virtual DbSet<Student_tution> Student_tution { get; set; }

        public System.Data.Entity.DbSet<Real_MUlti.Models.StudentViewModel> StudentViewModels { get; set; }
    }

public class StudentViewModelsController : Controller
    {
        private StudentDBContext db = new StudentDBContext();

        // GET: StudentViewModels
        public ActionResult Index()
        {
            StudentViewModel student = new StudentViewModel();
          
            return View(db.StudentViewModels.ToList());
        }

@model IEnumerable<Real_MUlti.Models.StudentViewModel>

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

<h2>Index</h2>

<p>
    @Html.ActionLink("Create New", "Create")
</p>
<table class="table">
    <tr>
        <th>
            @Html.DisplayNameFor(model => model.FirstName)
        </th>
        <th>
            @Html.DisplayNameFor(model => model.LastName)
        </th>
        <th>
            @Html.DisplayNameFor(model => model.FatherName)
        </th>
        <th>
            @Html.DisplayNameFor(model => model.Address)
        </th>
        <th>
            @Html.DisplayNameFor(model => model.DOB)
        </th>
        <th>
            @Html.DisplayNameFor(model => model.MobileNo)
        </th>
        <th>
            @Html.DisplayNameFor(model => model.CourseName)
        </th>
        <th>
            @Html.DisplayNameFor(model => model.Duration)
        </th>
        <th>
            @Html.DisplayNameFor(model => model.Timing)
        </th>
        <th>
            @Html.DisplayNameFor(model => model.Institute)
        </th>
        <th>
            @Html.DisplayNameFor(model => model.HighestQualification)
        </th>
        <th>
            @Html.DisplayNameFor(model => model.Standard)
        </th>
        <th>
            @Html.DisplayNameFor(model => model.Subject)
        </th>
        <th>
            @Html.DisplayNameFor(model => model.SchoolName)
        </th>
        <th></th>
    </tr>

@foreach (var item in Model) {
    <tr>
        <td>
            @Html.DisplayFor(modelItem => item.FirstName)
        </td>
        <td>
            @Html.DisplayFor(modelItem => item.LastName)
        </td>
        <td>
            @Html.DisplayFor(modelItem => item.FatherName)
        </td>
        <td>
            @Html.DisplayFor(modelItem => item.Address)
        </td>
        <td>
            @Html.DisplayFor(modelItem => item.DOB)
        </td>
        <td>
            @Html.DisplayFor(modelItem => item.MobileNo)
        </td>
        <td>
            @Html.DisplayFor(modelItem => item.CourseName)
        </td>
        <td>
            @Html.DisplayFor(modelItem => item.Duration)
        </td>
        <td>
            @Html.DisplayFor(modelItem => item.Timing)
        </td>
        <td>
            @Html.DisplayFor(modelItem => item.Institute)
        </td>
        <td>
            @Html.DisplayFor(modelItem => item.HighestQualification)
        </td>
        <td>
            @Html.DisplayFor(modelItem => item.Standard)
        </td>
        <td>
            @Html.DisplayFor(modelItem => item.Subject)
        </td>
        <td>
            @Html.DisplayFor(modelItem => item.SchoolName)
        </td>
        <td>
            @Html.ActionLink("Edit", "Edit", new { id=item.StudentID }) |
            @Html.ActionLink("Details", "Details", new { id=item.StudentID }) |
            @Html.ActionLink("Delete", "Delete", new { id=item.StudentID })
        </td>
    </tr>
}

</table>