No worries!
After a bit of debugging on my own. I realized that something had occurred when updating WooCommerce from WP Admin which halted the WooCommerce update when in process. Hence, why the class wasn't being located displaying the above error.
By deleting 'yolo-organisk-framework' which was using WC_Widget I was able to completely remove WooCommerce and redownload and install WooCommerce , then followed by addubg 'yolo-organisk-framework' successfully.
This obviously returns an error 500 making my website useless.
