When I follow the examples on this link below, I get the following error.

Link: https://our.umbraco.org/documentation/Add-ons/UmbracoForms/Developer/Working-With-Data/

Error: There is already an open DataReader associated with this Command which must be closed first.

Version: Umbraco version 7.5.6 assembly: 1.0.6185.24083

This is my code:

@inherits Umbraco.Web.Macros.PartialViewMacroPage
@using Umbraco.Forms.Mvc.DynamicObjects

<h1>@CurrentPage.Id</h1>

<ul id="comments">
 @foreach (dynamic record in Library
           .GetApprovedRecordsFromFormOnPage (@CurrentPage.Id, "af21150b-d4fd-46cd-91a8-d43cadef1150").OrderBy("Created"))
 {
     <li>
          <h1>@record.Name</h1>
     </li>
  }
</ul>

Am I doing something wrong, or is it just something else ?