Problem with "return _context.Models.ToList()" in PartialView from COntroller and using IEnumerable View Model.

When trying to use an IEnumerable model in a view, and returning a List() from the controller I get the following error:

The model item passed into the ViewDataDictionary is of type 'System.Collections.Generic.List`1[DefaultWeb.Models.DefaultWebSite.Source]', but this ViewDataDictionary instance requires a model item of type 'DefaultWeb.Models.DefaultWebSite.Source'.

It is not a type mismatch! I've seen many post regarding this error, but not specifically addressing this issue

//Controller
public IActionResult Main()
{
    return PartialView(_context.Sources.ToList());
}



// PartialView Main
@model IEnumerable<Source>
@using System.Collections.Generic;<div id="comments-mgr" class="card">
.
.
@foreach (var item in Model ) {
.
.
 @Html.DisplayFor(modelItem => item.Name)
 ......
.
}
.
.</div>

I know with Razor @RenderPartial, you need to define the ViewDataDictionary, but with "return PartialView()"; from a Controller there is no such option. 

I am using project hosting and not IISExpress, Also using the current version of VS2017 15.2 26430.15 and have updated all the packages...

Any ideas? Thanks!