Errors Cloning to Subdomain on Plesk

I have tried to clone main site to a subdomain using Plesk but am getting errors when the database copy fails. Has anybody has these errors and is there an answer please? see below.

Warning: Skipping an uninitialized class “MailChimp_WooCommerce_Single_Order”, replacements might not be complete.

Warning: Skipping an uninitialized class “Elementor\Core\Logger\Items\PHP”, replacements might not be complete.