Cryptodbm_internals.ErrorsSourcetype error = | File_not_found of string| File_overwrite of string| File_not_appendable of string| File_not_writeable of string| Bad_format of string * string| Bad_password of error_location| Bad_signature of error_location| No_signature of error_location| Is_Closed of error_location| Is_Already_Open of error_location| No_subtable of string| Subtable_exists of string| Subtable_overflow| Overwrite of string * error_location| Unbound of string * error_location| DB_Error of exn| Corrupted of error_location * string| Backup_failure of exn