Edit File: ThemeUpgraderSkin.php
<?php /** * Theme upgrader skin used in REST API response. */ namespace Automattic\Kkart\Admin\Overrides; defined( 'ABSPATH' ) || exit; /** * Admin\Overrides\ThemeUpgraderSkin Class. */ class ThemeUpgraderSkin extends \Theme_Upgrader_Skin { /** * Avoid undefined property error from \Theme_Upgrader::check_parent_theme_filter(). * * @var array */ public $api; /** * Hide the skin header display. */ public function header() {} /** * Hide the skin footer display. */ public function footer() {} /** * Hide the skin feedback display. * * @param string $string String to display. * @param mixed ...$args Optional text replacements. */ public function feedback( $string, ...$args ) {} /** * Hide the skin after display. */ public function after() {} }