An error occurs when assigning the data obtained from the background to the template.

Question

  以下是出错的代码

Argument 1 passed to think\Model::getRelationData() must be an instance of think\model\Relation, instance of app\admin\model\Admin given, called in E:\html\JiZhang\thinkphp\library\think\Model.php on line 622 and defined