Wrong url after checkout

i get this error from the error-log

[30-Oct-2017 11:42:39 UTC] order_key was called incorrectly. Order properties should not be accessed directly. Backtrace: require(‘wp-blog-header.php’), require_once(‘wp-includes/template-loader.php’), do_action(‘template_redirect’), WP_Hook->do_action, WP_Hook->apply_filters, WC_AJAX::do_wc_ajax, do_action(‘wc_ajax_checkout’), WP_Hook->do_action, WP_Hook->apply_filters, WC_AJAX::checkout, WC_Checkout->process_checkout, WC_Checkout->process_order_payment, WC_GTPayPayment->process_payment, WC_Abstract_Legacy_Order->__get, wc_doing_it_wrong. This message was added in version 3.0.

Hello, am having same error during checkout. Please is there a possible fix for this?

Replace

 return array(
                'result' => 'success',
             'redirect' => add_query_arg(
                      'order-pay', $order->id, add_query_arg(
                               'key', $order->order_key, get_permalink(get_option('woocommerce_pay_page_id'))

              
                        )
                )
            );

with:

 return array(
	        	'result' => 'success',
				'redirect'	=> $order->get_checkout_payment_url( true )
	        );

on gtpay-payment.php line 288.

i have this same issue it is redireccting me back to my home page

I have the same issue and resolved with given instruction by @motajom.

@motajom
Thanks Man ??