Issue #3147602 by Project Update Bot: Automated Drupal 9 compatibility fixes

      $url = $image_style ? $image_style->buildUrl($image_uri) : file_create_url($image_uri);

      $image_url = URL::fromUri($url);

      $image_url = Url::fromUri($url);

      $attributes = [];

      // Generate Thumbs.

      if ($thumbs) {

        $thumb_uri = $thumb_style->buildUrl($image_uri);

        $thumb_url = URL::fromUri($thumb_uri)->toString();

        $thumb_url = Url::fromUri($thumb_uri)->toString();

        $attributes['data-thumb'] = $thumb_url;

      }