Merge pull request #43691 from nextcloud/bugfix/noid/help-finding-mis…

…sing-notifications

fix(notifications): Help finding missing notifications by logging it

lib/private/Notification/Manager.php

@@ -366,6 +366,7 @@ public function prepare(INotification $notification, string $languageCode): INot
 		}
 
 		if (!$notification->isValidParsed()) {
+			$this->logger->info('Notification was not parsed by any notifier [app: ' . $notification->getApp() . ', subject: ' . $notification->getSubject() . ']');
 			throw new \InvalidArgumentException('The given notification has not been handled');
 		}