Slider Shortcode

Fatal error: Uncaught Error: Call to undefined function gdlr_get_attachment_info() in /home/ki286984/public_html/wp-content/plugins/gdlr-shortcode/gdlr-shortcode-elements.php:703 Stack trace: #0 /home/ki286984/public_html/wp-includes/shortcodes.php(363): gdlr_gallery_shortcode(Array, '', 'gallery') #1 [internal function]: do_shortcode_tag(Array) #2 /home/ki286984/public_html/wp-includes/shortcodes.php(237): preg_replace_callback('/\\[(\\[?)(gdlr_h...', 'do_shortcode_ta...', '<pre class="gdl...') #3 /home/ki286984/public_html/wp-includes/class-wp-hook.php(286): do_shortcode('<pre class="gdl...') #4 /home/ki286984/public_html/wp-includes/plugin.php(208): WP_Hook->apply_filters('<pre class="gdl...', Array) #5 /home/ki286984/public_html/wp-includes/post-template.php(247): apply_filters('the_content', '[gdlr_heading t...') #6 /home/ki286984/public_html/wp-content/themes/big-store/template-parts/content-page.php(15): the_content() #7 /home/ki286984/public_html/wp-includes/template.php(706): require('/home/ki286984/...') #8 /hom in /home/ki286984/public_html/wp-content/plugins/gdlr-shortcode/gdlr-shortcode-elements.php on line 703