Fatal error: Uncaught Error: Class "WP_REST_Search_Handler" not found in /mnt/web420/c3/51/59628051/htdocs/WP-BBS/wp-includes/rest-api/search/class-wp-rest-term-search-handler.php:17
Stack trace:
#0 /mnt/web420/c3/51/59628051/htdocs/WP-BBS/wp-settings.php(303): require()
#1 /mnt/web420/c3/51/59628051/htdocs/WP-BBS/wp-config.php(91): require_once('...')
#2 /mnt/web420/c3/51/59628051/htdocs/WP-BBS/wp-load.php(53): require_once('...')
#3 /mnt/web420/c3/51/59628051/htdocs/WP-BBS/wp-blog-header.php(13): require_once('...')
#4 /mnt/web420/c3/51/59628051/htdocs/WP-BBS/index.php(47): require('...')
#5 {main}
  thrown in /mnt/web420/c3/51/59628051/htdocs/WP-BBS/wp-includes/rest-api/search/class-wp-rest-term-search-handler.php on line 17