Featured Image wont resize

I have had this working in the past I am sure of it but now in my blog all the featured images I have set are blowing up to some huge full width image. I checked my child theme functions and I still have the post-thumbnails support code in there but it is NOT working no matter what I do. I checked the post content.php page to make sure it was using the same function name also.

What am I doing wrong here?

***************************Functions.php********************************

/* EJS - Modified Featured Image Size */
	
	add_theme_support( 'post-thumbnails' );
	add_image_size( 'twentyseventeen-featured-image', 580, 400, true );  
	add_image_size( 'twentyseventeen-thumbnail-avatar', 100, 100 );
	

	// Set the default content width.
	$GLOBALS['content_width'] = 525;

	// This theme uses wp_nav_menu() in two locations.
	register_nav_menus(

*****************************Content.php***********************************

</header><!-- .entry-header -->

	<?php if ( '' !== get_the_post_thumbnail() && ! is_single() ) : ?>
		<div class="post-thumbnail">
			<a>">
				<?php the_post_thumbnail( 'twentyseventeen-featured-image' ); ?>
			</a>
		</div><!-- .post-thumbnail -->
	<?php endif; ?>

	<div class="entry-content">

• This topic was modified 4 years, 7 months ago by Steven Stern (sterndata).

The page I need help with: [log in to see the link]