Custom view could not open

Hello,

I’m trying to open a custom view because I want to see another angular web page.

So I create a new custom view with this definition :

<custom name="custom-test-view" title="View Title">

  <!-- dataset is required -->
  <dataset type="jpql">
  <![CDATA[
  SELECT * FROM public.aTable;
  ]]>
  </dataset>

  <!-- template is require -->
  <template>
  <![CDATA[
      
  ]]>
  </template>
</custom>

Then I create an action view which have this definition :

<action-view name="test.custom" title="Custom action">
  <view name="custom-test-view" type="custom"/>
</action-view>

But when I use the action « test.custom », i get :
« Internal Error: HTTP 404
message: /index/partials/views/custom.html
description: the ressource isn’t available »

What am I doing wrong ?

Hello,
Update: I found that I have to include this view thanks to dashlet and panel-dashlet, and not open it directly.
But now, I have another problem. I don’t know how it works, anything is showed on it.