Как сохранить в БД заполненную форму из кастомного php-файла?

$status = Core_Mail::instance()
       ->to(EMAIL_TO)
       ->from(EMAIL_TO)
       ->subject($_EMAIL.' - Онлайн заявка c www.www.ru')
       ->message(trim($sText))
       ->contentType('text/html')
       //->header('X-HostCMS-Reason', 'Alert')
       //->header('Precedence', 'bulk')
       ->send();

Ошибка: 200
OK
Exception: The property 'source_id' does not exist in the model 'form_fill'
36 modules/core/exception.php
1392 modules/core/orm.php
168 modules/form/controller/show.php
366 templates/template13/ajax_form_main.php
2 templates/template13/template.htm
96 modules/template/model.php
161 modules/core/page.php
472 modules/core/command/controller/default.php
194 modules/core/router/route.php
239 index.php
SyntaxError: JSON.parse: unexpected character at line 1 column 1 of the JSON data
parsererror

var data = form.serialize();
$.ajax({
...})

if (Core::moduleIsActive('form'))
{
   $oForm = Core_Entity::factory('Form', Core_Array::get(Core_Page::instance()->libParams, 'formId'));
   $Form_Controller_Show = new Form_Controller_Show($oForm);

   $xslName = Core_Array::get(Core_Page::instance()->libParams, 'formXsl');

   if (!is_null(Core_Array::getPost($oForm->button_name)))
   {
      $Form_Controller_Show
         ->values($_POST + $_FILES)
         // 0 - html, 1- plain text
         ->mailType(Core_Array::get(Core_Page::instance()->libParams, 'mailType'))
         ->mailXsl(
            Core_Entity::factory('Xsl')->getByName(Core_Array::get(Core_Page::instance()->libParams, 'notificationMailXsl'))
         )
         ->mailFromFieldName(Core_Array::get(Core_Page::instance()->libParams, 'emailFieldName'))
         ->process();
   }

   $Form_Controller_Show
      ->xsl(
         Core_Entity::factory('Xsl')->getByName($xslName)
      )
      ->show();
}