The same thing happened to our website. After updating the new version 2.1.0 of “Checkout Field Editor for WooCommerce”, a fatal error occurred on our website (the error message is similar to the previous post). Both the frontend and backend of the website appeared error message and cannot be opened. Later I found that the Woocommerce plugin was also affected, so I disabled both plugins at the same time. Later, after downgrading the version of “Checkout Field Editor for WooCommerce” to version 2.06, the front-end and back-end of the website returned to normal. So don’t update this 2.1.0 version.
‧WordPress: Version 6.0.2
‧E-commerce plugin: WooCommerce version 7.2.1
‧PHP: Version 7.4.33
‧Theme: Flatsome
