Many errors since WooCommerce 3.0

Hi, we are in development in debug mode, and I noticed the follow error with the plugin:

Notice: variation_data was called incorrectly. Product properties should not be accessed directly. Backtrace: do_action(‘toplevel_page_stock-manager’), WP_Hook->do_action, WP_Hook->apply_filters, call_user_func_array, Stock_Manager_Admin->display_plugin_admin_page, include_once(‘/plugins/woocommerce-stock-manager/admin/views/admin.php’), WC_Abstract_Legacy_Product->__get, wc_doing_it_wrong Please see Debugging in WordPress for more information.

(This message was added in version 3.0.) in /nas/content/live/username/wp-includes/functions.php on line 4138