Catchable fatal error: Argument 1 passed to B2M_DataAccess_Profito::getTopCategoryByCategory() must be an instance of B2M_Model_Category, null given, called in /mnt/DocumentRoot/b2m/projects/profito/application/default/controllers/SupplierCatalogController.php on line 111 and defined in /mnt/DocumentRoot/b2m/library/B2M/DataAccess/Profito.php on line 673