WP Bakery Shortcode with Post Attributes

add_filter( 'vc_gitem_template_attribute_event_button', 'vc_gitem_template_attribute_event_button', 10, 2 );
function vc_gitem_template_attribute_event_button( $value, $data ) {

  extract( array_merge( array(
   'post' => null,
   'data' => '',
  ), $data ) );

  $event_link = get_field( "event_link", $post->ID  );
  $event_button_text = get_field( "event_button_text", $post->ID  );

  return "<button class='btn btn-primary btn-events'><a href='$event_link' target='_blank'>$event_button_text</a></div>";
  
} 


add_shortcode( 'wps_event_link', 'vc_event_button_render' );
function vc_event_button_render($atts, $content, $tag) {
    return '{{event_button}}';
}