Fatal error: Uncaught Error: Class "WP_REST_Themes_Controller" not found in /mnt/web024/c2/88/51749488/htdocs/wp-includes/rest-api.php:309
Stack trace:
#0 /mnt/web024/c2/88/51749488/htdocs/wp-includes/class-wp-hook.php(292): create_initial_rest_routes()
#1 /mnt/web024/c2/88/51749488/htdocs/wp-includes/class-wp-hook.php(316): WP_Hook->apply_filters()
#2 /mnt/web024/c2/88/51749488/htdocs/wp-includes/plugin.php(484): WP_Hook->do_action()
#3 /mnt/web024/c2/88/51749488/htdocs/wp-includes/rest-api.php(521): do_action()
#4 /mnt/web024/c2/88/51749488/htdocs/wp-includes/rest-api.php(347): rest_get_server()
#5 /mnt/web024/c2/88/51749488/htdocs/wp-includes/class-wp-hook.php(292): rest_api_loaded()
#6 /mnt/web024/c2/88/51749488/htdocs/wp-includes/class-wp-hook.php(316): WP_Hook->apply_filters()
#7 /mnt/web024/c2/88/51749488/htdocs/wp-includes/plugin.php(551): WP_Hook->do_action()
#8 /mnt/web024/c2/88/51749488/htdocs/wp-includes/class-wp.php(388): do_action_ref_array()
#9 /mnt/web024/c2/88/51749488/htdocs/wp-includes/class-wp.php(750): WP->parse_request()
#10 /mnt/web024/c2/88/51749488/htdocs/wp-includes/functions.php(1291): WP->main()
#11 /mnt/web024/c2/88/51749488/htdocs/wp-blog-header.php(16): wp()
#12 /mnt/web024/c2/88/51749488/htdocs/index.php(35): require('...')
#13 {main}
  thrown in /mnt/web024/c2/88/51749488/htdocs/wp-includes/rest-api.php on line 309