JInstaller: :Install: SQL-Fehler Index column size too large. The maximum column size is 767 bytes.

Erweiterung „Installieren“: SQL Fehler beim Ausführen der Abfrage: „DB-Funktion mit Fehlercode 1709 fehlgeschlagen!
Index column size too large. The maximum column size is 767 bytes.
SQL = 

CREATE TABLE IF NOT EXISTS `#__quiz_quizzes` (
	`id` INT(10) UNSIGNED NOT NULL AUTO_INCREMENT,
	`asset_id` INT(10) UNSIGNED NOT NULL DEFAULT '0',
	`title` VARCHAR(255) NOT NULL,
	`alias` VARCHAR(255) NOT NULL,
	`description` MEDIUMTEXT NOT NULL,
	`catid` INT(10) UNSIGNED NOT NULL DEFAULT '0',
	`difficulty_level` INT(10) UNSIGNED NOT NULL DEFAULT '0',
	`published` TINYINT(3) NOT NULL DEFAULT '0',
	`quiz_type` TINYINT(4) UNSIGNED NOT NULL DEFAULT '0',
	`duration` INT(10) UNSIGNED NOT NULL DEFAULT '0',
	`cutoff` INT(10) UNSIGNED NOT NULL DEFAULT '0',
	`messages` MEDIUMTEXT NULL,
	`certificates` MEDIUMTEXT NULL,
	`secret` VARCHAR(64) NULL DEFAULT NULL,
	`max_questions` INT(10) UNSIGNED NULL DEFAULT NULL,
	`qns_ordering` TINYINT(4) UNSIGNED NOT NULL DEFAULT '0',
	`max_qns_per_page` INT(10) UNSIGNED NOT NULL DEFAULT '1',
	`badge` INT(10) UNSIGNED NOT NULL DEFAULT '0',
	`responses` INT(10) UNSIGNED NOT NULL DEFAULT '0',
	`created_by` INT(10) UNSIGNED NOT NULL,
	`created` DATETIME NOT NULL DEFAULT '0000-00-00 00:00:00',
	`ip_address` VARCHAR(39) NOT NULL,
	`checked_out` INT(10) UNSIGNED NOT NULL DEFAULT '0',
	`checked_out_time` DATETIME NOT NULL DEFAULT '0000-00-00 00:00:00',
	`publish_up` DATETIME NOT NULL DEFAULT '0000-00-00 00:00:00',
	`publish_down` DATETIME NOT NULL DEFAULT '0000-00-00 00:00:00',
	`modified_by` INT(10) UNSIGNED NOT NULL DEFAULT '0',
	`modified` DATETIME NOT NULL DEFAULT '0000-00-00 00:00:00',
	`attribs` VARCHAR(5120) NULL DEFAULT NULL,
	`ordering` INT(11) UNSIGNED NOT NULL DEFAULT '0',
	`metakey` TEXT NULL,
	`metadesc` TEXT NULL,
	`access` INT(10) UNSIGNED NOT NULL DEFAULT '1',
	`metadata` TEXT NULL,
	`language` CHAR(7) NOT NULL DEFAULT '*',
	PRIMARY KEY (`id`),
	INDEX `idx_quiz_quizzes_access` (`access`),
	INDEX `idx_quiz_quizzes_checkout` (`checked_out`),
	INDEX `idx_quiz_quizzes_published` (`published`),
	INDEX `idx_quiz_quizzes_catid` (`catid`),
	INDEX `idx_quiz_quizzes_language` (`language`),
	INDEX `idx_quiz_quizzes_title` (`title`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 DEFAULT COLLATE=utf8mb4_unicode_ci;

“

Paket Installieren: Bei der Installation der Erweiterung trat ein Fehler auf: com_communityquiz.zip