更新

app/Http/Controllers/Api/UserController.php

@@ -435,7 +435,7 @@ class UserController extends Controller
                 ),
             );
             $result = $apiFace->match($images);
-
+            $result = json_decode($result,true);
             if($result['error_code']==0){
                 $res = $result['face_list'];
             }