Fatal error: Uncaught Error: Call to undefined function is_checkout() in /customers/7/8/7/cekura.dk/httpd.www/wp-content/plugins/conditional-woo-checkout-field-pro/includes/cwcfp-scripts-styles.php:42 Stack trace: #0 /customers/7/8/7/cekura.dk/httpd.www/wp-includes/class-wp-hook.php(324): cwcfp_add_datepicker_script('') #1 /customers/7/8/7/cekura.dk/httpd.www/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters(NULL, Array) #2 /customers/7/8/7/cekura.dk/httpd.www/wp-includes/plugin.php(517): WP_Hook->do_action(Array) #3 /customers/7/8/7/cekura.dk/httpd.www/wp-includes/script-loader.php(2265): do_action('wp_enqueue_scri...') #4 /customers/7/8/7/cekura.dk/httpd.www/wp-includes/class-wp-hook.php(324): wp_enqueue_scripts('') #5 /customers/7/8/7/cekura.dk/httpd.www/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters(NULL, Array) #6 /customers/7/8/7/cekura.dk/httpd.www/wp-includes/plugin.php(517): WP_Hook->do_action(Array) #7 /customers/7/8/7/cekura.dk/httpd.www/wp-includes/general-template.php(3050): do_action('wp_head') #8 /customers/7/8/7/cekura.dk/httpd.www/wp-content/themes/enfold/header.php(228): wp_head() #9 /customers/7/8/7/cekura.dk/httpd.www/wp-includes/template.php(810): require_once('/customers/7/8/...') #10 /customers/7/8/7/cekura.dk/httpd.www/wp-includes/template.php(745): load_template('/customers/7/8/...', true, Array) #11 /customers/7/8/7/cekura.dk/httpd.www/wp-includes/general-template.php(48): locate_template(Array, true, true, Array) #12 /customers/7/8/7/cekura.dk/httpd.www/wp-content/themes/enfold/page.php(9): get_header() #13 /customers/7/8/7/cekura.dk/httpd.www/wp-includes/template-loader.php(106): include('/customers/7/8/...') #14 /customers/7/8/7/cekura.dk/httpd.www/wp-blog-header.php(19): require_once('/customers/7/8/...') #15 /customers/7/8/7/cekura.dk/httpd.www/index.php(17): require('/customers/7/8/...') #16 {main} thrown in /customers/7/8/7/cekura.dk/httpd.www/wp-content/plugins/conditional-woo-checkout-field-pro/includes/cwcfp-scripts-styles.php on line 42