Hello , YITH WooCommerce
please help me with this issue
seems to me your plugin not uploaded properly and may be some files missing there. Please upload the full plugin (using ftp/cpanel) or you can use wp-admin => plugins => add new (in this case you have to deactivate and remove the existing plugin) and check.
I use Aurum Theme from Themeforest, there’s no YITH’s folder on Theme’s zip. This the same problem on WPbakery plugins
please check theme documentation hope you will get how to install the theme necessary plugins. Thanks