Fatal and Notice Errors

Hi,

Getting some errors when downloading PDF…

Notice: WC_Order_Item_Meta::__construct is deprecated since version 3.1! Use WC_Order_Item_Product instead. in /srv/www/suntec/htdocs/wp-includes/functions.php on line 3831

Fatal error: Uncaught Exception: FPDF error: Some data has already been output, can't send PDF file in /srv/www/suntec/htdocs/wp-content/plugins/shipping-labels-for-woo/wf-template/pdf-templates/fpdf.php:271 Stack trace: #0 /srv/www/suntec/htdocs/wp-content/plugins/shipping-labels-for-woo/wf-template/pdf-templates/fpdf.php(1063): FPDF->Error('Some data has a...') #1 /srv/www/suntec/htdocs/wp-content/plugins/shipping-labels-for-woo/wf-template/pdf-templates/fpdf.php(1012): FPDF->_checkoutput() #2 /srv/www/suntec/htdocs/wp-content/plugins/shipping-labels-for-woo/wf-woocommerce-packing-list.php(264): FPDF->Output('D', '#158-Shipping-L...') #3 /srv/www/suntec/htdocs/wp-includes/class-wp-hook.php(298): Wf_WooCommerce_Packing_List_Woo->wf_packinglist_print_window('') #4 /srv/www/suntec/htdocs/wp-includes/class-wp-hook.php(323): WP_Hook->apply_filters(NULL, Array) #5 /srv/www/suntec/htdocs/wp-includes/plugin.php(453): WP_Hook->do_action(Array) #6 /srv/www/suntec/htdocs/wp-admin/admin.php(154): do_action('admin_init') #7 /srv/www in /srv/www/suntec/htdocs/wp-content/plugins/shipping-labels-for-woo/wf-template/pdf-templates/fpdf.php on line 271

and also when printing

Notice: WC_Order_Item_Meta::__construct is deprecated since version 3.1! Use WC_Order_Item_Product instead. in /srv/www/suntec/htdocs/wp-includes/functions.php on line 3831

using latest woocommerce