ERROR 1064 (42000): You have an error in your SQL syntax – Cannot understand what the error means

I’m trying to import an SQL db, exported from another place. I have the SQL create script. I am not sure what might be going wrong…

My mariadb version is

select version(); +----------------+ | version()      | +----------------+ | 10.5.8-MariaDB | +----------------+ 1 row in set (0.000 sec) 

Table create script:

-- phpMyAdmin SQL Dump -- version 5.0.4 -- https://www.phpmyadmin.net/ -- -- Host: db -- Generation Time: Jan 04, 2021 at 05:59 PM -- Server version: 8.0.22 -- PHP Version: 7.4.11  SET SQL_MODE = "NO_AUTO_VALUE_ON_ZERO"; START TRANSACTION; SET time_zone = "+00:00";   /*!40101 SET @OLD_CHARACTER_SET_CLIENT=@@CHARACTER_SET_CLIENT */; /*!40101 SET @OLD_CHARACTER_SET_RESULTS=@@CHARACTER_SET_RESULTS */; /*!40101 SET @OLD_COLLATION_CONNECTION=@@COLLATION_CONNECTION */; /*!40101 SET NAMES utf8mb4 */;  -- -- Database: `mytestdb` -- CREATE DATABASE IF NOT EXISTS `mytestdb` DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci; USE `mytestdb`;  -- --------------------------------------------------------  -- -- Table structure for table `categories` --  DROP TABLE IF EXISTS `categories`; CREATE TABLE `categories` (   `id` int NOT NULL,   `category` varchar(100) GENERATED ALWAYS AS (json_unquote(json_extract(`json`,_utf8mb4'$  .category'))) VIRTUAL NOT NULL,   `popular` enum('true','false') GENERATED ALWAYS AS (json_unquote(json_extract(`json`,_utf8mb4'$  .popular'))) VIRTUAL NOT NULL,   `imageUrl` varchar(255) GENERATED ALWAYS AS (json_unquote(json_extract(`json`,_utf8mb4'$  .imageUrl'))) VIRTUAL NOT NULL,   `json` json NOT NULL,   `timestamp` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_0900_ai_ci; 

Error:

ERROR 1064 (42000) at line 33: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'NOT NULL,   `popular` enum('true','false') GENERATED ALWAYS AS (json_unquote(...' at line 3