Here's another not handled unsupported embed
- Declined by admin
- For pages with unsupported videos, it is better when their IV fails with `EMBED_NOT_SUPPORTED` (iFrame) than `ELEMENT_NOT_SUPPORTED` (**@unsupported**).
EMBED_NOT_SUPPORTED will start working the second we support a widget.
- Type of issue
- IV not generated for target page
- Feb 16, 2019