Happend after upgrade:
version: 20.0.2 RC1
PHP version 7.4:
An unhandled exception has been thrown:
TypeError: Argument 1 passed to OC\Files\SimpleFS\SimpleFolder::__construct() must implement interface OCP\Files\Folder, instance of OC\Files\Node\File given, called in nextcloud/lib/private/Files/AppData/AppData.php on line 150 and defined in nextcloud/lib/private/Files/SimpleFS/SimpleFolder.php:44