an ancestor violates the following Content Security Policy directive: “frame-ancestors ‘self’

場景描述：
iframe內嵌jupyter頁面；
本地安裝jupyter,命令列jupyter notebook開啟，在本地開發環境下的頁面內嵌入iframe

<div id="left">
    <button class="button-test" >測試</button>
</div>
<div id="right">
    <iframe
 
 id="nb-iframe" src="http://localhost:8888/notebooks/exp-2-Copy1%20(1).ipynb" style="width:800px;height:600px;"></iframe> 
    <!-- <iframe width="560" height="315"  src="https://www.youtube.com/embed/YOUR_VIDEO_CODE" frameborder="0" allowfullscreen></iframe> -->


</div>

<style>
 

*{
    margin:0;
    padding:0;
}
 #left{
     width:200px;
     height: 800px;
     background-color:#ccc;
     float:left;
 }
 #right{
     height: 800px;
     margin-left:200px;
     padding-left:20px;
 }

.button-test{
    padding-left:10px;
    padding-right:10px;
    background-color:aqua;
    border-radius
 
: 4px;

}
</style>  

報錯：

Refused to display ‘http://localhost:8888/notebooks/exp-2-Copy1%20(1).ipynb’ in a frame because an ancestor violates the following Content Security Policy directive: “frame-ancestors ‘self’”.

解決方法：

啟動方式：

再次嵌入ok了。