Fatal error: Uncaught Error: Call to undefined function get_category_root_id() in C:\wordpress-6.6.2-zh_CN\wordpress\wp-content\themes\guandao\sidebar.php:5 Stack trace: #0 C:\wordpress-6.6.2-zh_CN\wordpress\wp-includes\template.php(810): require_once() #1 C:\wordpress-6.6.2-zh_CN\wordpress\wp-includes\template.php(745): load_template('C:\\wordpress-6....', true, Array) #2 C:\wordpress-6.6.2-zh_CN\wordpress\wp-includes\general-template.php(136): locate_template(Array, true, true, Array) #3 C:\wordpress-6.6.2-zh_CN\wordpress\wp-content\themes\guandao\category-pro.php(6): get_sidebar() #4 C:\wordpress-6.6.2-zh_CN\wordpress\wp-content\themes\guandao\archive.php(11): include('C:\\wordpress-6....') #5 C:\wordpress-6.6.2-zh_CN\wordpress\wp-includes\template-loader.php(106): include('C:\\wordpress-6....') #6 C:\wordpress-6.6.2-zh_CN\wordpress\wp-blog-header.php(19): require_once('C:\\wordpress-6....') #7 C:\wordpress-6.6.2-zh_CN\wordpress\index.php(17): require('C:\\wordpress-6....') #8 {main} thrown in C:\wordpress-6.6.2-zh_CN\wordpress\wp-content\themes\guandao\sidebar.php on line 5