WooCommerce has released its latest version (4.4.0) which is currently affecting themes and plugins, including WP Rocket.
All users are advised to update to WP Rocket 3.6.4 before updating WooCommerce plugin to avoid such issues.
For those who have already deactivated their WP Rocket, kindly deactivate your WooCommerce plugin temporarily in order to reactivate and update WP Rocket. For technical reasons WP Rocket needs to be active in order to receive the update notification.
Alternatively, you may: