Error loading Partial View script

Questions
1

Hello I am getting this error when loading my navigation script. Error loading Partial View script. Bellow is the script I an using. I do think it has something to do with using NodeByID but I am not sure and did not build the site original. I have copied the site from a very old umbraco version to a new version with win host and this seem to be my only hang up any help is appreciated.
Thanks,
Tommy

@{
	var HowWeHelpNode = Model.NodeById(1137);		
}

<div class="grid_3 alpha equalColumn">
	<div class="side-nav">
		<ul>
			@if(Model.Id == 1137)
			{
				<li class="active"><a href="/how-we-help.aspx">How We Help</a></li>
			}
			else
			{
				<li><a href="/how-we-help.aspx">How We Help</a></li>
			}

			@foreach(var child in HowWeHelpNode.Children){
			
				if(Model.Id == child.Id)
				{
					<li class="active"><a href="@child.Url">@child.Name</a></li>
				}
				else
				{
					<li><a href="@child.Url">@child.Name</a></li>
				}
			
			}
		</ul>
	</div>
<!-- /grid_3 --></div>
This is a companion discussion topic for the original entry at https://our.umbraco.com/forum/73402-error-loading-partial-view-script