Merge pull request #42406 from nextcloud/fix/dav/calendar-notification-less-than-minute-title

fix(dav): Hide less than minute diff in calendar notification title

apps/dav/lib/CalDAV/Reminder/Notifier.php

@@ -170,7 +170,7 @@ class Notifier implements INotifier {
 			$components[] = $this->l10n->n('%n minute', '%n minutes', $diff->i);
 		}
 
-		if (!$this->hasPhpDatetimeDiffBug()) {
+		if (count($components) > 0 && !$this->hasPhpDatetimeDiffBug()) {
 			// Limiting to the first three components to prevent
 			// the string from getting too long
 			$firstThreeComponents = array_slice($components, 0, 2);