hello, 

1-i create a module "Community Quiz Categories" with subcategories

2-when i try to access to a subcategories, i have this 

Fatal error: Call to a member function get() on null in 

............components/com_communityquiz/views/category/tmpl/default.php on line 23

3-before this crash (see picture), it seem the cJ quiz toolbar could not be lauch)

4-quiz work fine but cannot access to subcategories

5 seem that the CJ-quiz toolbar cannot be lauch....