I've added "@model IssueReporter.Models.Issue" on top of the code snippet based on the request. Why isn't it working?

@model IssueReporter.Models.Issue

@{
    ViewBag.Title = "Report an Issue";
}

<h2>@ViewBag.Title</h2>

@using (Html.BeginForm())
{
    <div>
        @Html.Label("Name")
        @Html.TextBox("Name")
    </div>

    <div>
        @Html.Label("Email")
        @Html.TextBox("Email")
    </div>

    <div>
        @Html.Label("DepartmentId")
        @Html.TextBox("DepartmentId")
    </div>

    <div>
        @Html.Label("Severity")
        @Html.TextBox("Severity")
    </div>

    <div>
        @Html.Label("Reproducible")
        @Html.TextBox("Reproducible")
    </div>

    <div>
        @Html.Label("DescriptionOfProblem")
        @Html.TextArea("DescriptionOfProblem")
    </div>

    <button type="submit">Save</button>
}