Hi,

I am having some trouble using the core URL picker. I followed the documentation exactly but my model is always null.

Here's the relevant cshtml from my _Footer partial, which is rendered by a site layout controller in my master template.

_Footer.cshtml

@inherits  UmbracoViewPage

@using Umbraco.Web.Models
@{
IEnumerable<Link> footerLinks = Model.Value<IEnumerable<Link>> 
("footerLinks", fallback: Fallback.ToAncestors);
}
<footer id="footer">
<div class="inner">
    <div class="content">
        <section>
            <h4 style="text-align:center">Networks</h4>
            <hr />

            @{

          if (footerLinks.Any())
        {
            <ul class="plain">
                @foreach (var link in footerLinks)
                {
                    <li><a href="@link.Url" 
          target="@link.Target">@link.Name</a></li>
                }
            </ul>
        }
    }
        </section>

Controller

  public ActionResult RenderFooter()
    {
        return PartialView(PARTIAL_VIEW_FOLDER_PATH + "_Footer.cshtml");
    }

Master

<!-- Footer -->
@{ Html.RenderAction("RenderFooter", "SiteLayout");}

Error

Object reference not set to an instance of an object.
Description: An unhandled exception occurred during the execution of 
the current web request. Please review the stack trace for more 
information about the error and where it originated in the code. 

Exception Details: System.NullReferenceException: Object reference not 
set to an instance of an object.

Source Error: 


 Line 3:  @using Umbraco.Web.Models
 Line 4:  @{
 **Line 5:  IEnumerable<Link> footerLinks = Model.Value<IEnumerable<Link>> 
  ("footerLinks", 
 fallback: Fallback.ToAncestors);**
 Line 6:  }
 Line 7:  <footer id="footer">

CMS

Any help would be really appreciated.