Edit file File name : search-0.15.2.php Content :<?php // phpcs:ignore WordPress.Files.FileName.NotHyphenatedLowercase /** * Compatibility for Jetpack Search version <= 0.15.2. * * @package automattic/jetpack-search */ namespace Automattic\Jetpack\Search\Compatibility\Jetpack; use Automattic\Jetpack\Search\Instant_Search; add_filter( 'option_sidebars_widgets', __NAMESPACE__ . '\convert_old_jetpack_search_sidebar', 10, 2 ); /** * Map the old Jetpack Search sidebar to the new Instant Search sidebar. * * @param array $sidebars_widgets Value of `sidebars_widgets` option. */ function convert_old_jetpack_search_sidebar( $sidebars_widgets ) { if ( ! empty( $sidebars_widgets[ Instant_Search::INSTANT_SEARCH_SIDEBAR ] ) || empty( $sidebars_widgets[ Instant_Search::OLD_INSTANT_SEARCH_SIDEBAR ] ) ) { return $sidebars_widgets; } $sidebars_widgets[ Instant_Search::INSTANT_SEARCH_SIDEBAR ] = $sidebars_widgets[ Instant_Search::OLD_INSTANT_SEARCH_SIDEBAR ]; unset( $sidebars_widgets[ Instant_Search::OLD_INSTANT_SEARCH_SIDEBAR ] ); return $sidebars_widgets; } Save