Fatal error: Uncaught Error: Call to undefined function is_checkout() in /home/server145808/ftp/migracja.duchgor.eu/wp-content/plugins/woo-checkout-field-editor-pro/public/class-thwcfd-public-checkout.php:22
Stack trace:
#0 /home/server145808/ftp/migracja.duchgor.eu/wp-includes/class-wp-hook.php(324): THWCFD_Public_Checkout->enqueue_styles_and_scripts('')
#1 /home/server145808/ftp/migracja.duchgor.eu/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters(NULL, Array)
#2 /home/server145808/ftp/migracja.duchgor.eu/wp-includes/plugin.php(517): WP_Hook->do_action(Array)
#3 /home/server145808/ftp/migracja.duchgor.eu/wp-includes/script-loader.php(2265): do_action('wp_enqueue_scri...')
#4 /home/server145808/ftp/migracja.duchgor.eu/wp-includes/class-wp-hook.php(324): wp_enqueue_scripts('')
#5 /home/server145808/ftp/migracja.duchgor.eu/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters(NULL, Array)
#6 /home/server145808/ftp/migracja.duchgor.eu/wp-includes/plugin.php(517): WP_Hook->do_action(Array)
#7 /home/server145808 in /home/server145808/ftp/migracja.duchgor.eu/wp-content/plugins/woo-checkout-field-editor-pro/public/class-thwcfd-public-checkout.php on line 22