Fatal error: Uncaught Error: Call to undefined function home_url() in D:\xampp\htdocs\w108\wp-includes\https-detection.php:37 Stack trace: #0 D:\xampp\htdocs\w108\wp-includes\https-detection.php(21): wp_is_home_url_using_https() #1 D:\xampp\htdocs\w108\wp-includes\https-migration.php(21): wp_is_using_https() #2 D:\xampp\htdocs\w108\wp-includes\https-migration.php(52): wp_should_replace_insecure_home_url() #3 D:\xampp\htdocs\w108\wp-includes\class-wp-hook.php(326): wp_replace_insecure_home_url('') #4 D:\xampp\htdocs\w108\wp-includes\plugin.php(205): WP_Hook->apply_filters('', Array) #5 D:\xampp\htdocs\w108\wp-includes\theme.php(2050): apply_filters('wp_get_custom_c...', '', 'twentytwentyone') #6 D:\xampp\htdocs\w108\wp-includes\theme.php(1957): wp_get_custom_css() #7 D:\xampp\htdocs\w108\wp-includes\class-wp-hook.php(324): wp_custom_css_cb('') #8 D:\xampp\htdocs\w108\wp-includes\class-wp-hook.php(348): WP_Hook->apply_filters(NULL, Array) #9 D:\xampp\htdocs\w108\wp-includes\plugin.php(517): WP_Hook->do_action(Array) #10 D:\xampp\htdocs\w108\wp-includes\general-template.php(3064): do_action('wp_head') #11 D:\xampp\htdocs\w108\wp-content\themes\twentytwentyone\header.php(20): wp_head() #12 D:\xampp\htdocs\w108\wp-includes\template.php(810): require_once('D:\\xampp\\htdocs...') #13 D:\xampp\htdocs\w108\wp-includes\template.php(745): load_template('D:\\xampp\\htdocs...', true, Array) #14 D:\xampp\htdocs\w108\wp-includes\general-template.php(48): locate_template(Array, true, true, Array) #15 D:\xampp\htdocs\w108\wp-content\plugins\static-files-generator\static-files-generator.php(242): get_header() #16 D:\xampp\htdocs\w108\wp-includes\class-wp-hook.php(324): {closure}('') #17 D:\xampp\htdocs\w108\wp-includes\class-wp-hook.php(348): WP_Hook->apply_filters(NULL, Array) #18 D:\xampp\htdocs\w108\wp-includes\plugin.php(517): WP_Hook->do_action(Array) #19 D:\xampp\htdocs\w108\wp-includes\template-loader.php(13): do_action('template_redire...') #20 D:\xampp\htdocs\w108\wp-blog-header.php(19): require_once('D:\\xampp\\htdocs...') #21 D:\xampp\htdocs\w108\index.php(17): require('D:\\xampp\\htdocs...') #22 {main} thrown in D:\xampp\htdocs\w108\wp-includes\https-detection.php on line 37