new RouteException( 'woocommerce_rest_checkout_process_payment_error', esc_html( $e->getMessage() ), 400, array_map( 'esc_attr', $additional_data ) );
		}
	}

	/**
	 * Gets the chosen payment method ID from the request.
	 *
	 * @throws RouteException On error.
	 * @param \WP_REST_Request $request Request object.
	 * @return string
	 */
	private function get_request_payment_method_id( \WP_REST_Request $request ) {
		$payment_method = $this->get_request_payment_method( $request );
		return is_null( $payment_method ) ? '' : $payment_method->id;
	}

	/**
	 * Gets and formats payment request data.
	 *
	 * @param \WP_REST_Request $request Request object.
	 * @return array
	 */
	private function get_request_payment_data( \WP_REST_Request $request ) {
		static $payment_data = [];
		if ( ! empty( $payment_data ) ) {
			return $payment_data;
		}
		if ( ! empty( $request['payment_data'] ) ) {
			foreach ( $request['payment_data'] as $data ) {
				$payment_data[ sanitize_key( $data['key'] ) ] = wc_clean( $data['value'] );
			}
		}

		return $payment_data;
	}

	/**
	 * Update the current order using the posted values from the request.
	 *
	 * @param \WP_REST_Request $request Full details about the request.
	 */
	private function update_order_from_request( \WP_REST_Request $request ) {
		$this->order->set_customer_note( wc_sanitize_textarea( $request['customer_note'] ) ?? '' );
		$payment_method = $this->get_request_payment_method( $request );
		if ( null !== $payment_method ) {
			WC()->session->set( 'chosen_payment_method', $payment_method->id );
			$this->order->set_payment_method( $payment_method->id );
			$this->order->set_payment_method_title( $payment_method->title );
		}
		$this->persist_additional_fields_for_order( $request );

		wc_do_deprecated_action(
			'__experimental_woocommerce_blocks_checkout_update_order_from_request',
			array(
				$this->order,
				$request,
			),
			'6.3.0',
			'woocommerce_store_api_checkout_update_order_from_request',
			'This action was deprecated in WooCommerce Blocks version 6.3.0. Please use woocommerce_store_api_checkout_update_order_from_request instead.'
		);

		wc_do_deprecated_action(
			'woocommerce_blocks_checkout_update_order_from_request',
			array(
				$this->order,
				$request,
			),
			'7.2.0',
			'woocommerce_store_api_checkout_update_order_from_request',
			'This action was deprecated in WooCommerce Blocks version 7.2.0. Please use woocommerce_store_api_checkout_update_order_from_request instead.'
		);

		/**
		 * Fires when the Checkout Block/Store API updates an order's from the API request data.
		 *
		 * This hook gives extensions the chance to update orders based on the data in the request. This can be used in
		 * conjunction with the ExtendSchema class to post custom data and then process it.
		 *
		 * @since 7.2.0
		 *
		 * @param \WC_Order $order Order object.
		 * @param \WP_REST_Request $request Full details about the request.
		 */
		do_action( 'woocommerce_store_api_checkout_update_order_from_request', $this->order, $request );

		$this->order->save();
	}

	/**
	 * Gets the chosen payment method title from the request.
	 *
	 * @throws RouteException On error.
	 * @param \WP_REST_Request $request Request object.
	 * @return string
	 */
	private function get_request_payment_method_title( \WP_REST_Request $request ) {
		$payment_method = $this->get_request_payment_method( $request );
		return is_null( $payment_method ) ? '' : $payment_method->get_title();
	}

	/**
	 * Persist additional fields for the order after validating them.
	 *
	 * @param \WP_REST_Request $request Full details about the request.
	 */
	private function persist_additional_fields_for_order( \WP_REST_Request $request ) {
		if ( Features::is_enabled( 'experimental-blocks' ) ) {
			$document_object = $this->get_document_object_from_rest_request( $request );
			$document_object->set_context( 'order' );
			$additional_fields_order   = $this->additional_fields_controller->get_contextual_fields_for_location( 'order', $document_object );
			$additional_fields_contact = $this->additional_fields_controller->get_contextual_fields_for_location( 'contact', $document_object );
			$additional_fields         = array_merge( $additional_fields_order, $additional_fields_contact );
		} else {
			$additional_fields_order   = $this->additional_fields_controller->get_fields_for_location( 'order' );
			$additional_fields_contact = $this->additional_fields_controller->get_fields_for_location( 'contact' );
			$additional_fields         = array_merge( $additional_fields_order, $additional_fields_contact );
		}

		$field_values = (array) $request['additional_fields'] ?? [];

		foreach ( $additional_fields as $key => $field ) {
			if ( isset( $field_values[ $key ] ) ) {
				$this->additional_fields_controller->persist_field_for_order( $key, $field_values[ $key ], $this->order, 'other', false );
			}
		}

		// We need to sync the customer additional fields with the order otherwise they will be overwritten on next page load.
		if ( 0 !== $this->order->get_customer_id() && get_current_user_id() === $this->order->get_customer_id() ) {
			$customer = new WC_Customer( $this->order->get_customer_id() );
			$this->additional_fields_controller->sync_customer_additional_fields_with_order(
				$this->order,
				$customer
			);
			$customer->save();
		}
	}

	/**
	 * Returns a document object from a REST request.
	 *
	 * @param \WP_REST_Request $request The REST request.
	 * @return DocumentObject The document object or null if experimental blocks are not enabled.
	 */
	public function get_document_object_from_rest_request( \WP_REST_Request $request ) {
		return new DocumentObject(
			[
				'customer' => [
					'billing_address'   => $request['billing_address'],
					'shipping_address'  => $request['shipping_address'],
					'additional_fields' => array_intersect_key(
						$request['additional_fields'] ?? [],
						array_flip( $this->additional_fields_controller->get_contact_fields_keys() )
					),
				],
				'checkout' => [
					'payment_method'    => $request['payment_method'],
					'create_account'    => $request['create_account'],
					'customer_note'     => $request['customer_note'],
					'additional_fields' => array_intersect_key(
						$request['additional_fields'] ?? [],
						array_flip( $this->additional_fields_controller->get_order_fields_keys() )
					),
				],
			]
		);
	}
}
<br />
<b>Fatal error</b>:  Trait 'Automattic\WooCommerce\StoreApi\Utilities\CheckoutTrait' not found in <b>/home/htzanetatos/public_html/wp-content/plugins/woocommerce/src/StoreApi/Routes/V1/Checkout.php</b> on line <b>17</b><br />