A good understanding of web development is required to follow this article.
If your embedded YouTube videos have suddenly stopped playing on your website, you are not alone. Instead of loading the player, they may now display the message "Error 153: Video player configuration error."

If you right-click on the error screen and select "Copy debug info," you’ll find the following text in the copied data:
"debug_error": "{\"errorCode\":\"embedder.identity.missing.referrer\"
The cause of this issue is the referrer policy. YouTube expects a valid referrer. When the embedded YouTube URL loads on a page where the referrer policy is set to "no-referrer," it triggers Error 153. This was likely tolerated previously, but Google appears to have tightened the policy recently, which has led to the problem.
