Add div's

Hi, I am trying to add different div’s around either the featured image or video. Below is the code I am using but this does not seem to be working… any ideas?

<?php
if ( has_post_thumbnail() ) {
	echo '<div class="ft-img">';
	echo get_the_post_thumbnail( $post->ID, 'full' );
	echo '</div>';
}
elseif ( has_post_video() ) {
	echo '<div class="ft-vid">';
	echo get_the_post_video( $post->ID, 'full' );
	echo '</div>';
}
?>

https://ww.wp.xz.cn/plugins/featured-video-plus/