Empty span? Advanced Custom Field import error

Hi,

I have added a image field to my CPT called posts and I’m now trying to display the image with the display posts shortcode, but can’t get it to work. What’s wrong?

I found this https://gist.github.com/billerickson/1209601 and when I tried using it, the span appears, but there is no content inside the span. My image field is named “erbjudandepuff”.

This is my code.

add_filter( 'display_posts_shortcode_output', 'be_display_posts_custom_fields', 10, 6 );
function be_display_posts_custom_fields( $output, $atts, $image, $title, $date, $excerpt ) {

// Get our custom fields
global $post;
$erbjudandepuff = esc_attr( get_post_meta( $post->ID, 'erbjudandepuff', true ) );

// If there's a value for the custom field, let's wrap them with <span>'s so you can control them with CSS
if( isset( $erbjudandepuff ) ) $erbjudandepuff = '<img class="erbjudandepuff" src="' . $erbjudandepuff . '" />';

// Now let's rebuild the output. 

$output = '<li><span class="right">' . $image . $erbjudandepuff .'</span>' . $title . $date . $excerpt . '</li>';

// Finally we'll return the modified output
return $output;

}

I added this in the functions.php

Any help in whats going wrong would be greatly appreciated!
Thanks!

https://wordpress.org/plugins/display-posts-shortcode/