Fatal error: Uncaught ExtensionDependencyError: DiscussionTools requires Linter to be installed.
in /var/www/html/includes/registration/ExtensionRegistry.php:438
Stack trace:
#0 /var/www/html/includes/registration/ExtensionRegistry.php(282): ExtensionRegistry->readFromQueue()
#1 /var/www/html/includes/Setup.php(282): ExtensionRegistry->loadFromQueue()
#2 /var/www/html/includes/WebStart.php(92): require_once('/var/www/html/i...')
#3 /var/www/html/index.php(44): require('/var/www/html/i...')
#4 {main}
thrown in /var/www/html/includes/registration/ExtensionRegistry.php on line 438