Do you have a configuration backup or a copy of the debug file? If not, there's no way to recover other than a hard-reset of the device and you will have to re-configure it.
If you have a backup, you can hard-reset and simply restore the backup (note that it needs to have been the same version the ZD is now running, or you have to upgrade/downgrade the ZD to that version)
If you have the debug file you will need to open a technical support case at
https://support.ruckuswireless.com/co...