fix

app/Repositories/Circle/CircleRepository.php

@@ -39,9 +39,9 @@ class CircleRepository
             'image' => $request['image'] ?? '',
             'join_limit' => $request['join_limit'],
             'limit_condition' => $request['limit_condition'],
-            'join_question' => $request['join_question'] ?? '',
+            'join_question' => json_encode($request['join_question']) ?? '',
             'limit_article_ids' => $request['limit_article_ids'] ?? '',
-            'contains_function' => $request['contains_function'] ?? '',
+            'contains_function' => json_encode($request['contains_function']) ?? '',
         ];
 
         DB::beginTransaction();