Error message

Warning: Creating default object from empty value in panels_renderer_standard->render_pane_content() (line 548 of /srv/www/freistilbox/clients/c11000/s2124/.deploy/releases/5156ea99e265a7d9fee859263bcc31545cfb0e36/docroot/sites/all/modules/contrib/panels/plugins/display_renderers/panels_renderer_standard.class.php).