Featured Image not displaying [closed]

See my answer here: https://stackoverflow.com/questions/26454205/how-can-i-add-thumbnail-to-recent-post-wordpress/26467188#26467188

In addition to the <?php the_post_thumbnail(); ?> (where you include this is where the image will appear), you have to make sure your theme has post thumbnails support. This needs to be in your theme function file: add_theme_support( 'post-thumbnails' );.

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