Enable Gutenberg for Woocommerce

Open developer tools in the browser and check for errors in console.
To better understand the errors, set define(SCRIPT_DEBUG, true) in your wp-config.php. Remember to turn this option off when done with debugging, because it uses dev version of React and slows down page.
Install React Developers Tools and Redux DevTools (if needed) – available for Chrome & Firefox, possibly for other browsers as well, for thorough debugging.

Good luck!