Frozen Date Not Remove

I update my erpnext to latest version but due to some issue frozen date automatically show in account setting doctype becuse of this frozen date i can’t create any transactional document like sales invoice,purchase invoice.
This frozen date also not available in database.
i also not able to change this frozen date

This value is not auto-updated in in the Account Settings. If Audit Log is enabled for the Account Settings, you can check through the version logs for the user who updated this value. Hope you have already remove this date by now as per your need.