元组在asp.net mvc剃刀视图中必须至少包含两个元素

我不知道为什么我会犯这个错误。我以前做过多元组控件,但当我转到5时,我得到了这个错误。我错过了什么?

Compiler Error Message: CS8124: Tuple must contain at least two elements.

    Source Error:
    
    Line 78:     
    Line 79:     
    Line 80:     public class _Page_Views_Shared_Controls_MetaInput_cshtml : System.Web.Mvc.WebViewPage<(int Index {

MetaInput.cshtml

@model (int Index, MetaModel Field, List<MetaModel> FieldList, string Prefix, string ClassName)

呼叫页面

 @Html.Partial(MVC.Shared.Views.Controls.MetaInput, (field.Index, field.Item, Model.Meta, "Players", "table-col-md"))