Import Content: "Click here to download a CSV sample file" link is broken - no sample CSV can be downloaded

Problem

In the Content → Import Content portlet, the link "Click here to download a CSV sample file" is broken. Clicking it does not download any file — the browser navigates to a Liferay/Struts URL that fails to resolve and renders Chrome's "webpage might be temporarily down or it may have moved permanently to a new web address" error page.

This blocks the documented starting point for a CSV content import: users have no reference file showing the expected column headers for the selected Content Type.

Steps to Reproduce

1. Log in to dotAdmin (reproduced on demo.dotcms.com).
2. Go to Content → Search and open the Import Content screen (/dotAdmin/#/c/content?mId=71b8...).
3. Click "Click here to download a CSV sample file".

Expected Behavior

A sample CSV file is downloaded, containing the header row for the selected Content Type / language.

Actual Behavior

No file is downloaded. The browser leaves dotAdmin and lands on an error page for a URL of the form:

/c/portal/layout?p_l_id=71b8a1ca-37b6-4b6e-a43b-...&p_p_id=content&p_p_action=1&p_p_state=maximized
  &angularCurrentPortlet=content&p_p_mode=view
  &_content_struts_action=%2Fext%2Fcontentlet%2Fimport_contentlets&_content_cmd=...

Note the link also assumes the legacy portal/Struts navigation, so it breaks out of the Angular admin shell instead of triggering a download in place.

Notes / Possible Cause

The sample-CSV action still points at the legacy /c/portal/layout + _content_struts_action=/ext/contentlet/import_contentlets endpoint. It looks like either the endpoint no longer resolves or the required parameters are no longer being built correctly from the Angular portlet, so the request 404s instead of returning the CSV.

Worth confirming whether the sample download should be reimplemented as a direct REST/servlet download (e.g. returning text/csv with Content-Disposition: attachment) so it works independently of the portal layout URL.

Environment

• Instance: demo.dotcms.com
• Browser: Chrome (macOS)
• Portlet: Import Content (Content Search)

Screenshots

1. Import Content screen with the "Click here to download a CSV sample file" link.
2. Error page shown after clicking the link.

Start at the Import Content screen's sample CSV link and trace its legacy /c/portal/layout request with _content_struts_action=/ext/contentlet/import_contentlets. Confirm how the selected Content Type and language are passed, then verify that clicking the link downloads a CSV with the expected header row without leaving the Angular admin shell.