Not working with PHP 8.0

I bought the Deluxe version which worked fine for months. Yesterday I upgraded my PHP version from 7.4 to 8.0. Today I used the “Quick Export” function and then the system poped a “System Error” message.

Now I changed the PHP version back to 7.4, and it works fine as before. My WordPress version is 5.9.3, and I used LiteSpeed webserver and MariaDB.

Best Regards,

Chris Lin