When viewing a demo with embedded YouTube videos in Safari, users may encounter Error 153. This error occurs when an embedded video fails to load correctly.
The issue is related to a compatibility problem between YouTube’s embedded player and Safari. Unfortunately, there is no immediate solution from YouTube for this issue.
Until YouTube resolves this issue, or a Safari update fixes it, we recommend using an alternative browser to view demos containing embedded YouTube videos.
We apologise for the inconvenience and are confident that a fix will be implemented by YouTube or Apple in the near future.