Fatal error: Uncaught Error: Call to undefined function is_checkout() in /homepages/18/d805158240/htdocs/app805160415/wp-content/plugins/woo-checkout-field-editor-pro/classes/class-thwcfd-checkout.php:22
Stack trace:
#0 /homepages/18/d805158240/htdocs/app805160415/wp-includes/class-wp-hook.php(287): THWCFD_Checkout->enqueue_styles_and_scripts('')
#1 /homepages/18/d805158240/htdocs/app805160415/wp-includes/class-wp-hook.php(311): WP_Hook->apply_filters(NULL, Array)
#2 /homepages/18/d805158240/htdocs/app805160415/wp-includes/plugin.php(484): WP_Hook->do_action(Array)
#3 /homepages/18/d805158240/htdocs/app805160415/wp-includes/script-loader.php(2004): do_action('wp_enqueue_scri...')
#4 /homepages/18/d805158240/htdocs/app805160415/wp-includes/class-wp-hook.php(287): wp_enqueue_scripts('')
#5 /homepages/18/d805158240/htdocs/app805160415/wp-includes/class-wp-hook.php(311): WP_Hook->apply_filters('', Array)
#6 /homepages/18/d805158240/htdocs/app805160415/wp-includes/plugin.php(484): WP_Hook->do_action(Array)
#7 /homepages/18/d80 in /homepages/18/d805158240/htdocs/app805160415/wp-content/plugins/woo-checkout-field-editor-pro/classes/class-thwcfd-checkout.php on line 22