主题设置跟支持显示这个是Warning: call_user_func() expects parameter 1 to be a valid callback, function 'wpjam_theme_support_page' not found or invalid function name in E:\zhandian\PHPTutorial\WWW\wp-content\plugins\wpjam-basic\php5\include\admin\admin-menus.php on line 188

Warning: call_user_func() expects parameter 1 to be a valid callback, function 'wpjam_theme_support_page' not found or invalid function name in E:\zhandian\PHPTutorial\WWW\wp-content\plugins\wpjam-basic\php5\include\admin\admin-menus.php on line 188是什么意思