Issue #3315760 by scuba_fly: Images are not loaded on the media add page,...

    }

    if ($set_id == 'all') {

      foreach ($this->cocoonController->getSets() as $set) {

        $images = array_merge($images, get_cached_data('cocoon_media:set_' . $set['id'], [

      $sets = $this->cocoonController->getSets();

      foreach ($sets as $set) {

        $images = array_merge($images, $this->cocoonController->getCachedData('cocoon_media:set_' . $set['id'], [

          $this->cocoonController,

          'getFilesBySet',

        ], [$set['id']], $this->cacheDuration));