Hello,
You need to install and activate all required plugins – http://prntscr.com/rv6ext http://prntscr.com/rv6f1p https://www.8theme.com/demo/docs/royal/Plugins/Included_Plugins
This outdated file http://prntscr.com/rv6fey will be fixed in the next update of the theme, there is no critical issue with this.
Before the next WC update, please check the theme changelog to find information about compatibility – https://themeforest.net/item/royal-multipurpose-wordpress-theme/8611976 http://prntscr.com/rv6go3
Regards