For anyone having an issue with embedded YouTube videos and are getting the 153 error, I was finally able to fix my problem.
I did it by adding the code below, to the <head> section of the RapidWeaver page's HTML, that my videos are on.
<meta name="referrer" content="strict-origin-when-cross-origin">
I'm using the Video Wall stack on the page, but I don't think it has anything to do with the stack in particular. Instead I think it has more to do with YouTube's Referrer-Policy, for video player configuration.
It was really frustrating, and it took me almost three weeks and a lot of research online, to figure it out. But my videos are now working as before, and playing again in the Video Wall stack.
I'm not sure if it will work for everyone, but hopefully it will help some that are having the same 153 error problem, with their YouTube embedded videos.