Fatal error: Uncaught TypeError: call_user_func_array(): Argument #1 ($callback) must be a valid callback, function "my_excerpt_mblength" not found or invalid function name in /home/users/2/linkwin/web/recovery-dazaifu.jp/wp-includes/class-wp-hook.php:324 Stack trace: #0 /home/users/2/linkwin/web/recovery-dazaifu.jp/wp-includes/plugin.php(205): WP_Hook->apply_filters(110, Array) #1 /home/users/2/linkwin/web/recovery-dazaifu.jp/wp-content/plugins/wp-multibyte-patch/wp-multibyte-patch.php(267): apply_filters('excerpt_mblengt...', 110) #2 /home/users/2/linkwin/web/recovery-dazaifu.jp/wp-includes/class-wp-hook.php(324): multibyte_patch->excerpt_mblength(110) #3 /home/users/2/linkwin/web/recovery-dazaifu.jp/wp-includes/plugin.php(205): WP_Hook->apply_filters(110, Array) #4 /home/users/2/linkwin/web/recovery-dazaifu.jp/wp-includes/formatting.php(3992): apply_filters('excerpt_length', 110) #5 /home/users/2/linkwin/web/recovery-dazaifu.jp/wp-includes/class-wp-hook.php(324): wp_trim_excerpt('<p><img class="...', Object(WP_Post)) #6 /home/users/2/linkwin/web/recovery-dazaifu.jp/wp-includes/plugin.php(205): WP_Hook->apply_filters('', Array) #7 /home/users/2/linkwin/web/recovery-dazaifu.jp/wp-includes/rest-api/endpoints/class-wp-rest-posts-controller.php(1963): apply_filters('get_the_excerpt', '', Object(WP_Post)) #8 /home/users/2/linkwin/web/recovery-dazaifu.jp/wp-includes/rest-api/endpoints/class-wp-rest-posts-controller.php(641): WP_REST_Posts_Controller->prepare_item_for_response(Object(WP_Post), Object(WP_REST_Request)) #9 /home/users/2/linkwin/web/recovery-dazaifu.jp/wp-includes/rest-api/class-wp-rest-server.php(1292): WP_REST_Posts_Controller->get_item(Object(WP_REST_Request)) #10 /home/users/2/linkwin/web/recovery-dazaifu.jp/wp-includes/rest-api/class-wp-rest-server.php(1125): WP_REST_Server->respond_to_request(Object(WP_REST_Request), '/wp/v2/posts/(?...', Array, NULL) #11 /home/users/2/linkwin/web/recovery-dazaifu.jp/wp-includes/rest-api/class-wp-rest-server.php(439): WP_REST_Server->dispatch(Object(WP_REST_Request)) #12 /home/users/2/linkwin/web/recovery-dazaifu.jp/wp-includes/rest-api.php(449): WP_REST_Server->serve_request('/wp/v2/posts/65...') #13 /home/users/2/linkwin/web/recovery-dazaifu.jp/wp-includes/class-wp-hook.php(324): rest_api_loaded(Object(WP)) #14 /home/users/2/linkwin/web/recovery-dazaifu.jp/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters('', Array) #15 /home/users/2/linkwin/web/recovery-dazaifu.jp/wp-includes/plugin.php(565): WP_Hook->do_action(Array) #16 /home/users/2/linkwin/web/recovery-dazaifu.jp/wp-includes/class-wp.php(418): do_action_ref_array('parse_request', Array) #17 /home/users/2/linkwin/web/recovery-dazaifu.jp/wp-includes/class-wp.php(813): WP->parse_request('') #18 /home/users/2/linkwin/web/recovery-dazaifu.jp/wp-includes/functions.php(1336): WP->main('') #19 /home/users/2/linkwin/web/recovery-dazaifu.jp/wp-blog-header.php(16): wp() #20 /home/users/2/linkwin/web/recovery-dazaifu.jp/index.php(17): require('/home/users/2/l...') #21 {main} thrown in /home/users/2/linkwin/web/recovery-dazaifu.jp/wp-includes/class-wp-hook.php on line 324