Youtube Iframe lightbox not working

Below is a snippet of code that i am using for the youtube embed. It's not working, just says moved or deleted.

	<div class="row">
						<div class="col-md-6 col-lg-4">
						<div class="card" style="width: 20rem;">
							<img class="card-img-top" src="images/pos.jpg" alt="Card image cap">
							<div class="card-body">
								<p class="card-text">Some quick example text to build on the card title and make up the bulk of the card's content.</p>
								<a href="https://www.youtube.com/watch?v=SiKnWBPkQ4I" class="btn btn-primary" data-lightbox="iframe">Watch Now</a>
							</div>
						</div>
						</div>