Hi @exnihilo_maxime .
Thank you very much for your reply.
This is the error shown in the logs:
2019-09-17T07:57:27+00:00 CRITICAL Uncaught Error: Call to a member function save_post() on null in /home/customer/www/nevelli.creativepatricktesting.co.uk/public_html/wp-content/themes/nevelli/functions/theme-support.php:148
Stack trace:
#0 /home/customer/www/nevelli.creativepatricktesting.co.uk/public_html/wp-includes/class-wp-hook.php(286): {closure}(22, 0)
#1 /home/customer/www/nevelli.creativepatricktesting.co.uk/public_html/wp-includes/class-wp-hook.php(310): WP_Hook->apply_filters('', Array)
#2 /home/customer/www/nevelli.creativepatricktesting.co.uk/public_html/wp-includes/plugin.php(465): WP_Hook->do_action(Array)
#3 /home/customer/www/nevelli.creativepatricktesting.co.uk/public_html/wp-content/plugins/woocommerce/includes/admin/meta-boxes/class-wc-meta-box-product-data.php(532): do_action('woocommerce_sav...', 22, 0)
#4 /home/customer/www/nevelli.creativepatricktesting.co.uk/public_html/wp-content/plugins/woocommerce/includes/class-wc-ajax.php(2084): WC_Meta_Box_Product_Data::save_variations(14, Object(WP_Post))
#5 /home/customer/www/ in /home/customer/www/nevelli.creativepatricktesting.co.uk/public_html/wp-content/themes/nevelli/functions/theme-support.php on line 148
