asp.net mvc - i get Error executing child request for handler -

my login partial view. pass model contain some fields of tbl_profile partial view , fill , pass filled model actionresult in [httppost] part , ... i'm trouble in [httpget] part . error on line of cod " *@html.action("logon","account")"*. code :

     [httpget]     public actionresult logon(string returnurl)     {           using (var db = new mycontext())         {             var  allfeaturetolog = db.tbl_profile.select(u => new usersclass.logon { username = u.username, password_user = u.password_user }).tolist();              return partialview(allfeaturetolog);         }     } 

class:

   public class usersclass    {     public class logon     {         public string username { get; set; }         public string password_user { get; set; }     }    } 

logon.cshtml:

    @model myproject.models.usersclass.logon          @using (html.beginform())      {      @html.antiforgerytoken()    <form class="signin-form">       @html.textboxfor(m => m.username, new { @id = "username", @class = "input-block-       level", @placeholder = "* enter username" })      @html.textboxfor(m => m.password_user, new { @id = "password", @class = "input-block-level", @placeholder = "* enter pass" })      @html.validationmessage("loginerror")  <label class="checkbox">     <input type="checkbox">remember me</label> <button class="btn btn-medium btn-general input-block-level" type="submit">   enter</button>  </form>  } 

error:

     error executing child request handler 'system.web.mvc.httphandlerutil+serverexecutehttphandlerasyncwrapper' 

use instead ::

@{ html.renderaction("logon","account"); } 

this fix issue.