[#32744] All Modules type Articles Categories using same category

Server reporting function under Global Config says:

Fatal error: main(): The script tried to execute a method or access a property of an incomplete object. Please ensure that the class definition &quot;JCategoryNode&quot; of the object you are trying to operate on was loaded _before_ unserialize() gets called or provide a __autoload() function to load the class definition in /home/public_html/modules/mod_articles_categories/mod_articles_categories.php on line 29


and here is line 29's code says:
 
Code:
24 . $list = JModuleHelper::moduleCache($module, $params, $cacheparams);
25. 
26. if (!empty($list))
27. {
28.   $moduleclass_sfx = htmlspecialchars($params->get('moduleclass_sfx'));
29.   $startLevel = reset($list)->getParent()->level;
30.   require JModuleHelper::getLayoutPath('mod_articles_categories', $params-  >get('layout', 'default'));
31. }


## Test Instructions
Create and publish only one module type articles categories will make menu single contact blank.

Create and publish more than one module type article categories (using different categories): blank menu single contact and all modules this type display only one category.