Fatal Error

Hello, I am getting a Fatal Error in several spots on my site after updating my Woo plugins.

here:

https://www.fastcousa.com/?page_id=245

https://www.fastcousa.com/?page_id=244

https://www.fastcousa.com/?page_id=243

https://www.fastcousa.com/?product=spline-drive-1pc-black

This is a site I am helping a friend with and we really need it either back to its previous state or to fix these Fatal Errors.

Thank you greatly for any help!

-Pete