I’m having the same issue with the error since the update.
Fatal error: Class 'Tribe__Events__API' not found in /home/******/public_html/wp-content/plugins/event-tickets-plus/src/Tribe/Commerce/WooCommerce/Main.php on line 354
This happens when I save a product in woocommerce that is attached to a ticket. All plugins and wordpress are up to date.
Please advise.