swustzl

在react项目中使用， ie浏览器时，可能由于节点加载的问题，导致初始化时document.getElementById('wm_div_id')是空，会致使后续的调用方法报错  

### Self Checks - [X] This is only for bug report, if you would like to ask a quesion, please head to [Discussions](https://github.com/langgenius/dify/discussions/categories/general). - [X] I have searched for existing...