Counting Exercise - power 90?

The addon with key VanillaStats could not be found and will not be started.

#0 [internal function]: Vanilla\Logging\ErrorLogger::handleError(1024, 'The addon with ...', '/var/www/fronte...', 1123)
#1 /var/www/frontend-4bf5b7a2ad313e/library/Vanilla/AddonManager.php(1123): trigger_error('The addon with ...', 1024)
#2 /var/www/frontend-4bf5b7a2ad313e/bootstrap.php(554): Vanilla\AddonManager->startAddonsByKey(Array, 'addon')
#3 [internal function]: {closure}(Object(Vanilla\Utility\TracedContainer), Object(Vanilla\AddonManager), Object(Gdn_Request))
#4 /var/www/frontend-4bf5b7a2ad313e/vendor/vanilla/garden-container/src/Container.php(345): call_user_func_array(Object(Closure), Array)
#5 /var/www/frontend-4bf5b7a2ad313e/bootstrap.php(610): Garden\Container\Container->call(Object(Closure))
#6 /var/www/frontend-4bf5b7a2ad313e/index.php(28): require_once('/var/www/fronte...')
#7 {main}