call next

src/categories/activeusers.js

@@ -21,7 +21,7 @@ module.exports = function(Categories) {
 					return parseInt(uid, 10) !== 0 && array.indexOf(uid) === index;
 				}).slice(0, 24);
 
-				callback(null, uids);
+				next(null, uids);
 			}
 		], callback);
 	};