Hey guys!
I ran into the same exact issue and was very frustrated.
I attempted to reload the previous version of WooCommerce but I had trouble doing that, so I searched for other ways…
Go to WooCommerce in your dashboard.
-> System Status
MAKE SURE EVERY PLUGIN IS UP TO DATE!!
(anything out of date will be marked in red)
make sure your theme is up to date, and any relevant plugins as well.
in my case I had Amazon Payments Gateway and my theme Shapely out of date.
as soon as I updated both, everything was working smoothly.
