Steps to reproduce:

1. Install clean Ibexa DXP.
2. Add ezlandingpage fieldtype to Folder Content Type.
3. Remove the ezpage_pages table entry with content_id = 41 (Media folder).
4. Try to access Media folder - view/content/41/full/1/43.

Result:
You will be presented by NotFoundHttpException because of missing Page record.

Expected result:
The Content should be loaded even if the Page is missing.

Note:
Missing Page content can be a leftover from eZ Publish but this still should be handled in some way. The issue surfaced around v3.3.10-11 version. It was working in v3.3.9. //Edit regression from https://issues.ibexa.co/browse/IBX-843.