fix: ignore non-existing

Signed-off-by: Christopher Ng <chrng8@gmail.com>

apps/files_reminders/lib/Listener/NodeDeletedListener.php

@@ -26,6 +26,8 @@ declare(strict_types=1);
 
 namespace OCA\FilesReminders\Listener;
 
+use OC\Files\Node\NonExistingFile;
+use OC\Files\Node\NonExistingFolder;
 use OCA\FilesReminders\Service\ReminderService;
 use OCP\EventDispatcher\Event;
 use OCP\EventDispatcher\IEventListener;
@@ -42,6 +44,10 @@ class NodeDeletedListener implements IEventListener {
 		}
 
 		$node = $event->getNode();
+		if ($node instanceof NonExistingFile || $node instanceof NonExistingFolder) {
+			return;
+		}
+
 		$this->reminderService->removeAllForNode($node);
 	}
 }