No query results for model

am trying to get user followers post but i am getting this error No query results for model [App\Models\Idea] {"id":1,"user_id":1,"followable_type":"App\\Models\\User","followable_id":18,"accepted_at":"2022-07-

am using this package https://github.com/overtrue/laravel-follow

$following = $this->user->followings(App\Idea::class)->get();