Cielo Error

this is a link to the print screen.

http://www.escolaedti.com.br/wp-content/uploads/2017/08/Captura-de-Tela-2017-08-14-às-08.52.11.png

when I made this change:
/*class WC_Order_Item_Meta {*/

class WC_Order_Item_Product

on woocommerce/includes/class-wc-order-item-meta.php

I can see the page without redirection, and the page show me this:

Notice: id foi chamada incorretamente. Order properties should not be accessed directly. Backtrace: require(‘wp-blog-header.php’), require_once(‘wp-includes/template-loader.php’), include(‘/themes/enfold/page.php’), get_template_part, locate_template, load_template, require(‘/themes/enfold/includes/loop-page.php’), the_content, apply_filters(‘the_content’), WP_Hook->apply_filters, call_user_func_array, do_shortcode, preg_replace_callback, do_shortcode_tag, call_user_func, WC_Shortcodes::checkout, WC_Shortcodes::shortcode_wrapper, call_user_func, WC_Shortcode_Checkout::output, WC_Shortcode_Checkout::order_pay, do_action(‘woocommerce_receipt_checkout-cielo’), WP_Hook->do_action, WP_Hook->apply_filters, call_user_func_array, WC_Checkout_Cielo_Gateway->receipt_page, WC_Checkout_Cielo_Gateway->generate_cielo_form, WC_Checkout_Cielo_API->get_transaction_data, WC_Abstract_Legacy_Order->__get, wc_doing_it_wrong Leia como Depurar o WordP in /home/escolaedti/public_html/wp-includes/functions.php on line 4139

Notice: billing_first_name foi chamada incorretamente. Order properties should not be accessed directly. Backtrace: require(‘wp-blog-header.php’), require_once(‘wp-includes/template-loader.php’), include(‘/themes/enfold/page.php’), get_template_part, locate_template, load_template, require(‘/themes/enfold/includes/loop-page.php’), the_content, apply_filters(‘the_content’), WP_Hook->apply_filters, call_user_func_array, do_shortcode, preg_replace_callback, do_shortcode_tag, call_user_func, WC_Shortcodes::checkout, WC_Shortcodes::shortcode_wrapper, call_user_func, WC_Shortcode_Checkout::output, WC_Shortcode_Checkout::order_pay, do_action(‘woocommerce_receipt_checkout-cielo’), WP_Hook->do_action, WP_Hook->apply_filters, call_user_func_array, WC_Checkout_Cielo_Gateway->receipt_page, WC_Checkout_Cielo_Gateway->generate_cielo_form, WC_Checkout_Cielo_API->get_transaction_data, WC_Checkout_Cielo_API->get_customer_data, WC_Abstract_Legacy_Order->__get, wc_doing_it_wrong Leia como /home/escolaedti/public_html/wp-includes/functions.php on line 4139

Notice: billing_email foi chamada incorretamente. Order properties should not be accessed directly. Backtrace: require(‘wp-blog-header.php’), require_once(‘wp-includes/template-loader.php’), include(‘/themes/enfold/page.php’), get_template_part, locate_template, load_template, require(‘/themes/enfold/includes/loop-page.php’), the_content, apply_filters(‘the_content’), WP_Hook->apply_filters, call_user_func_array, do_shortcode, preg_replace_callback, do_shortcode_tag, call_user_func, WC_Shortcodes::checkout, WC_Shortcodes::shortcode_wrapper, call_user_func, WC_Shortcode_Checkout::output, WC_Shortcode_Checkout::order_pay, do_action(‘woocommerce_receipt_checkout-cielo’), WP_Hook->do_action, WP_Hook->apply_filters, call_user_func_array, WC_Checkout_Cielo_Gateway->receipt_page, WC_Checkout_Cielo_Gateway->generate_cielo_form, WC_Checkout_Cielo_API->get_transaction_data, WC_Checkout_Cielo_API->get_customer_data, WC_Abstract_Legacy_Order->__get, wc_doing_it_wrong Leia como /home/escolaedti/public_html/wp-includes/functions.php on line 4139

Notice: shipping_address_1 foi chamada incorretamente. Order properties should not be accessed directly. Backtrace: require(‘wp-blog-header.php’), require_once(‘wp-includes/template-loader.php’), include(‘/themes/enfold/page.php’), get_template_part, locate_template, load_template, require(‘/themes/enfold/includes/loop-page.php’), the_content, apply_filters(‘the_content’), WP_Hook->apply_filters, call_user_func_array, do_shortcode, preg_replace_callback, do_shortcode_tag, call_user_func, WC_Shortcodes::checkout, WC_Shortcodes::shortcode_wrapper, call_user_func, WC_Shortcode_Checkout::output, WC_Shortcode_Checkout::order_pay, do_action(‘woocommerce_receipt_checkout-cielo’), WP_Hook->do_action, WP_Hook->apply_filters, call_user_func_array, WC_Checkout_Cielo_Gateway->receipt_page, WC_Checkout_Cielo_Gateway->generate_cielo_form, WC_Checkout_Cielo_API->get_transaction_data, WC_Checkout_Cielo_API->get_shipping_data, WC_Abstract_Legacy_Order->__get, wc_doing_it_wrong Leia como /home/escolaedti/public_html/wp-includes/functions.php on line 4139

Notice: shipping_address_2 foi chamada incorretamente. Order properties should not be accessed directly. Backtrace: require(‘wp-blog-header.php’), require_once(‘wp-includes/template-loader.php’), include(‘/themes/enfold/page.php’), get_template_part, locate_template, load_template, require(‘/themes/enfold/includes/loop-page.php’), the_content, apply_filters(‘the_content’), WP_Hook->apply_filters, call_user_func_array, do_shortcode, preg_replace_callback, do_shortcode_tag, call_user_func, WC_Shortcodes::checkout, WC_Shortcodes::shortcode_wrapper, call_user_func, WC_Shortcode_Checkout::output, WC_Shortcode_Checkout::order_pay, do_action(‘woocommerce_receipt_checkout-cielo’), WP_Hook->do_action, WP_Hook->apply_filters, call_user_func_array, WC_Checkout_Cielo_Gateway->receipt_page, WC_Checkout_Cielo_Gateway->generate_cielo_form, WC_Checkout_Cielo_API->get_transaction_data, WC_Checkout_Cielo_API->get_shipping_data, WC_Abstract_Legacy_Order->__get, wc_doing_it_wrong Leia como /home/escolaedti/public_html/wp-includes/functions.php on line 4139

Notice: shipping_city foi chamada incorretamente. Order properties should not be accessed directly. Backtrace: require(‘wp-blog-header.php’), require_once(‘wp-includes/template-loader.php’), include(‘/themes/enfold/page.php’), get_template_part, locate_template, load_template, require(‘/themes/enfold/includes/loop-page.php’), the_content, apply_filters(‘the_content’), WP_Hook->apply_filters, call_user_func_array, do_shortcode, preg_replace_callback, do_shortcode_tag, call_user_func, WC_Shortcodes::checkout, WC_Shortcodes::shortcode_wrapper, call_user_func, WC_Shortcode_Checkout::output, WC_Shortcode_Checkout::order_pay, do_action(‘woocommerce_receipt_checkout-cielo’), WP_Hook->do_action, WP_Hook->apply_filters, call_user_func_array, WC_Checkout_Cielo_Gateway->receipt_page, WC_Checkout_Cielo_Gateway->generate_cielo_form, WC_Checkout_Cielo_API->get_transaction_data, WC_Checkout_Cielo_API->get_shipping_data, WC_Abstract_Legacy_Order->__get, wc_doing_it_wrong Leia como /home/escolaedti/public_html/wp-includes/functions.php on line 4139

Notice: shipping_postcode foi chamada incorretamente. Order properties should not be accessed directly. Backtrace: require(‘wp-blog-header.php’), require_once(‘wp-includes/template-loader.php’), include(‘/themes/enfold/page.php’), get_template_part, locate_template, load_template, require(‘/themes/enfold/includes/loop-page.php’), the_content, apply_filters(‘the_content’), WP_Hook->apply_filters, call_user_func_array, do_shortcode, preg_replace_callback, do_shortcode_tag, call_user_func, WC_Shortcodes::checkout, WC_Shortcodes::shortcode_wrapper, call_user_func, WC_Shortcode_Checkout::output, WC_Shortcode_Checkout::order_pay, do_action(‘woocommerce_receipt_checkout-cielo’), WP_Hook->do_action, WP_Hook->apply_filters, call_user_func_array, WC_Checkout_Cielo_Gateway->receipt_page, WC_Checkout_Cielo_Gateway->generate_cielo_form, WC_Checkout_Cielo_API->get_transaction_data, WC_Checkout_Cielo_API->get_shipping_data, WC_Abstract_Legacy_Order->__get, wc_doing_it_wrong Leia como