Fatal error: Uncaught Error: Undefined constant WC_Stripe_UPE_Payment_Gateway::OPTIMIZED_CHECKOUT_DEFAULT_LAYOUT in /srv/users/feltg-stage/apps/feltg-stage/public/wp-content/plugins/woocommerce-gateway-stripe/includes/admin/stripe-settings.php:285 Stack trace: #0 /srv/users/feltg-stage/apps/feltg-stage/public/wp-content/plugins/woocommerce-gateway-stripe/includes/payment-methods/class-wc-stripe-upe-payment-gateway.php(281): require() #1 /srv/users/feltg-stage/apps/feltg-stage/public/wp-content/plugins/woocommerce-gateway-stripe/includes/payment-methods/class-wc-stripe-upe-payment-gateway.php(172): WC_Stripe_UPE_Payment_Gateway->init_form_fields() #2 /srv/users/feltg-stage/apps/feltg-stage/public/wp-content/plugins/woocommerce-gateway-stripe/woocommerce-gateway-stripe.php(753): WC_Stripe_UPE_Payment_Gateway->__construct() #3 /srv/users/feltg-stage/apps/feltg-stage/public/wp-content/plugins/woocommerce-gateway-stripe/includes/class-wc-stripe-order-handler.php(293): WC_Stripe->get_main_stripe_gateway() #4 /srv/users/feltg-stage/apps/feltg-stage/public/wp-includes/class-wp-hook.php(341): WC_Stripe_Order_Handler->maybe_process_redirect_order(Object(WP)) #5 /srv/users/feltg-stage/apps/feltg-stage/public/wp-includes/class-wp-hook.php(365): WP_Hook->apply_filters(NULL, Array) #6 /srv/users/feltg-stage/apps/feltg-stage/public/wp-includes/plugin.php(570): WP_Hook->do_action(Array) #7 /srv/users/feltg-stage/apps/feltg-stage/public/wp-includes/class-wp.php(838): do_action_ref_array('wp', Array) #8 /srv/users/feltg-stage/apps/feltg-stage/public/wp-includes/functions.php(1343): WP->main('') #9 /srv/users/feltg-stage/apps/feltg-stage/public/wp-blog-header.php(16): wp() #10 /srv/users/feltg-stage/apps/feltg-stage/public/index.php(17): require('/srv/users/felt...') #11 {main} thrown in /srv/users/feltg-stage/apps/feltg-stage/public/wp-content/plugins/woocommerce-gateway-stripe/includes/admin/stripe-settings.php on line 285