Fatal error: Uncaught Error: Class 'WP_REST_Revisions_Controller' not found in /export/sd06/www/jp/r/e/gmoserver/4/7/sd0024847/umauma-zanmai.com/wordpress-5.8.0-ja-jetpack_webfont-undernavicontrol/wp-includes/rest-api/endpoints/class-wp-rest-global-styles-revisions-controller.php:17 Stack trace: #0 /export/sd06/www/jp/r/e/gmoserver/4/7/sd0024847/umauma-zanmai.com/wordpress-5.8.0-ja-jetpack_webfont-undernavicontrol/wp-settings.php(285): require() #1 /export/sd06/www/jp/r/e/gmoserver/4/7/sd0024847/umauma-zanmai.com/wordpress-5.8.0-ja-jetpack_webfont-undernavicontrol/wp-config.php(90): require_once('/export/sd06/ww...') #2 /export/sd06/www/jp/r/e/gmoserver/4/7/sd0024847/umauma-zanmai.com/wordpress-5.8.0-ja-jetpack_webfont-undernavicontrol/wp-load.php(50): require_once('/export/sd06/ww...') #3 /export/sd06/www/jp/r/e/gmoserver/4/7/sd0024847/umauma-zanmai.com/wordpress-5.8.0-ja-jetpack_webfont-undernavicontrol/wp-blog-header.php(13): require_once('/export/sd06/ww...') #4 /export/sd06/www/jp/r/e/gmoserver/4/7/sd0024847/umauma-z in /export/sd06/www/jp/r/e/gmoserver/4/7/sd0024847/umauma-zanmai.com/wordpress-5.8.0-ja-jetpack_webfont-undernavicontrol/wp-includes/rest-api/endpoints/class-wp-rest-global-styles-revisions-controller.php on line 17

Fatal error: Uncaught Error: Call to a member function set() on null in /export/sd06/www/jp/r/e/gmoserver/4/7/sd0024847/umauma-zanmai.com/wordpress-5.8.0-ja-jetpack_webfont-undernavicontrol/wp-includes/l10n.php:856 Stack trace: #0 /export/sd06/www/jp/r/e/gmoserver/4/7/sd0024847/umauma-zanmai.com/wordpress-5.8.0-ja-jetpack_webfont-undernavicontrol/wp-includes/l10n.php(959): load_textdomain('default', '/export/sd06/ww...', 'ja') #1 /export/sd06/www/jp/r/e/gmoserver/4/7/sd0024847/umauma-zanmai.com/wordpress-5.8.0-ja-jetpack_webfont-undernavicontrol/wp-includes/class-wp-fatal-error-handler.php(49): load_default_textdomain() #2 [internal function]: WP_Fatal_Error_Handler->handle() #3 {main} thrown in /export/sd06/www/jp/r/e/gmoserver/4/7/sd0024847/umauma-zanmai.com/wordpress-5.8.0-ja-jetpack_webfont-undernavicontrol/wp-includes/l10n.php on line 856