Hi @samueljir,

I see the installation or the update of wpDiscuz has not completed successfully. You should make sure all database tables of wpDiscuz have created correctly. So please use phpMyAdmin plugin or the same tool in your hosting cPanel, go to the website WordPress database, open the SQL Tab, paste the following SQL and execute it (press ok). If the prefix of your db tables is not wp_, you should change it in the SQL before using it:

SET SQL_MODE = "NO_AUTO_VALUE_ON_ZERO";

CREATE TABLE IF NOT EXISTS `wp_wc_comments_subscription` (
  `id` int(11) NOT NULL AUTO_INCREMENT,
  `email` varchar(150) COLLATE utf8mb4_unicode_520_ci NOT NULL,
  `subscribtion_id` int(11) NOT NULL,
  `post_id` int(11) NOT NULL,
  `subscribtion_type` varchar(255) COLLATE utf8mb4_unicode_520_ci NOT NULL,
  `activation_key` varchar(255) COLLATE utf8mb4_unicode_520_ci NOT NULL,
  `confirm` tinyint(4) DEFAULT '0',
  `subscription_date` timestamp NULL DEFAULT CURRENT_TIMESTAMP,
  `imported_from` varchar(25) COLLATE utf8mb4_unicode_520_ci NOT NULL DEFAULT '',
  PRIMARY KEY (`id`),
  UNIQUE KEY `subscribe_unique_index` (`subscribtion_id`,`email`,`post_id`),
  KEY `subscribtion_id` (`subscribtion_id`),
  KEY `post_id` (`post_id`),
  KEY `confirm` (`confirm`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_520_ci;

CREATE TABLE IF NOT EXISTS `wp_wc_feedback_forms` (
  `id` int(11) NOT NULL AUTO_INCREMENT,
  `post_id` int(11) NOT NULL DEFAULT '0',
  `unique_id` varchar(15) COLLATE utf8mb4_unicode_520_ci NOT NULL,
  `question` varchar(255) COLLATE utf8mb4_unicode_520_ci NOT NULL,
  `opened` tinyint(4) UNSIGNED NOT NULL DEFAULT '0',
  `content` longtext COLLATE utf8mb4_unicode_520_ci NOT NULL,
  PRIMARY KEY (`id`),
  UNIQUE KEY `unique_id` (`unique_id`),
  KEY `post_id` (`post_id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_520_ci;


CREATE TABLE IF NOT EXISTS `wp_wc_flagged` (
  `comment_ID` int(11) DEFAULT NULL,
  `user_id` int(11) DEFAULT NULL,
  `user_ip` varchar(50) COLLATE utf8mb4_unicode_520_ci DEFAULT NULL,
  KEY `comment_ID` (`comment_ID`),
  KEY `user_id` (`user_id`),
  KEY `user_ip` (`user_ip`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_520_ci;


CREATE TABLE IF NOT EXISTS `wp_wc_follow_users` (
  `id` int(11) NOT NULL AUTO_INCREMENT,
  `post_id` int(11) NOT NULL DEFAULT '0',
  `user_id` int(11) NOT NULL DEFAULT '0',
  `user_email` varchar(125) COLLATE utf8mb4_unicode_520_ci NOT NULL,
  `user_name` varchar(255) COLLATE utf8mb4_unicode_520_ci NOT NULL,
  `follower_id` int(11) NOT NULL DEFAULT '0',
  `follower_email` varchar(125) COLLATE utf8mb4_unicode_520_ci NOT NULL,
  `follower_name` varchar(255) COLLATE utf8mb4_unicode_520_ci NOT NULL,
  `activation_key` varchar(32) COLLATE utf8mb4_unicode_520_ci NOT NULL,
  `confirm` tinyint(1) NOT NULL DEFAULT '0',
  `follow_timestamp` int(11) NOT NULL,
  `follow_date` datetime NOT NULL DEFAULT CURRENT_TIMESTAMP,
  PRIMARY KEY (`id`),
  UNIQUE KEY `follow_unique_key` (`user_email`,`follower_email`),
  KEY `post_id` (`post_id`),
  KEY `user_id` (`user_id`),
  KEY `user_email` (`user_email`),
  KEY `follower_id` (`follower_id`),
  KEY `follower_email` (`follower_email`),
  KEY `confirm` (`confirm`),
  KEY `follow_timestamp` (`follow_timestamp`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_520_ci;

CREATE TABLE IF NOT EXISTS `wp_wc_phrases` (
  `id` int(11) NOT NULL AUTO_INCREMENT,
  `phrase_key` varchar(255) COLLATE utf8mb4_unicode_520_ci NOT NULL,
  `phrase_value` text COLLATE utf8mb4_unicode_520_ci NOT NULL,
  PRIMARY KEY (`id`),
  KEY `phrase_key` (`phrase_key`(191))
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_520_ci;

CREATE TABLE IF NOT EXISTS `wp_wc_users_rated` (
  `id` int(11) NOT NULL AUTO_INCREMENT,
  `post_id` int(11) NOT NULL DEFAULT '0',
  `user_id` int(11) NOT NULL DEFAULT '0',
  `user_ip` varchar(255) COLLATE utf8mb4_unicode_520_ci NOT NULL DEFAULT '',
  `rating` int(11) NOT NULL,
  `date` int(11) UNSIGNED NOT NULL DEFAULT '0',
  PRIMARY KEY (`id`),
  KEY `post_id` (`post_id`),
  KEY `user_id` (`user_id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_520_ci;

CREATE TABLE IF NOT EXISTS `wp_wc_users_voted` (
  `id` int(11) NOT NULL AUTO_INCREMENT,
  `user_id` varchar(255) COLLATE utf8mb4_unicode_520_ci NOT NULL,
  `comment_id` int(11) NOT NULL,
  `vote_type` int(11) DEFAULT NULL,
  `is_guest` tinyint(1) DEFAULT '0',
  `post_id` bigint(20) UNSIGNED NOT NULL DEFAULT '0',
  `date` int(11) UNSIGNED NOT NULL DEFAULT '0',
  PRIMARY KEY (`id`),
  KEY `user_id` (`user_id`(191)),
  KEY `comment_id` (`comment_id`),
  KEY `vote_type` (`vote_type`),
  KEY `is_guest` (`is_guest`),
  KEY `post_id` (`post_id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_520_ci;