External storage broken after upgrade to 19.0.2

Hi guys,
external storage app stopped working for me after upgrade with a strange error when I try to browse the mounted share (WebDAV):
This directory is unavailable, please check the logs or contact the administrator

Log:
OCP\Files\StorageInvalidException: Sabre\HTTP\ClientHttpException: Unauthorized

  1. /var/www/nextcloud/lib/private/Files/Storage/DAV.php - line 246:OC\Files\Storage\DAV->convertException()
  2. /var/www/nextcloud/lib/private/Files/Storage/Common.php - line 878:OC\Files\Storage\DAV->opendir()
  3. <>OC\Files\Storage\Common->getDirectoryContent()
  4. /var/www/nextcloud/lib/private/Files/Cache/Scanner.php - line 408:iterator_to_array()
  5. /var/www/nextcloud/lib/private/Files/Cache/Scanner.php - line 388:OC\Files\Cache\Scanner->handleChildren()
  6. /var/www/nextcloud/lib/private/Files/Cache/Scanner.php - line 340:OC\Files\Cache\Scanner->scanChildren()
  7. /var/www/nextcloud/lib/private/Files/View.php - line 1339:OC\Files\Cache\Scanner->scan()

Though configuration check works fine, green check.
Any idea?