Hi there,
Thank you for reporting this. Our plugin, like many other popular plugins is using a library created by the WooCommerce team in order to perform various actions. It seems that on your website, a critical database table is missing.
The rankMath team created a simple plugin that should rectify this problem and instructions can be seen here https://rankmath.com/kb/fatal-error-after-1-0-49-update/
Please follow these instructions and let me know if you encounter any more problems.
Best regards,
Stefan