bug

app/Http/Controllers/V1/PostController.php

@@ -331,7 +331,8 @@ class PostController extends Controller
     public function topicList(Request $request)
     {
         $fractal = new Manager();
-        if(isset($request->category_id) && $request->category_id == -1){
+        $param = $request->all();
+        if(isset($param['category_id']) && $param['category_id'] == -1){
             $list = $this->postRepositories->myTopicList($request->all());
             $resource = new Collection($list, new MyTopicListTransformer());
             $resource->setPaginator(new IlluminatePaginatorAdapter($list));