Redis Internal error in RDB reading function at rdb.c:468 -> Unknown RDB string encoding type 32

Describe the bug

Internal error in RDB reading function at rdb.c:468 -> Unknown RDB string encoding type 32

To reproduce

start redis error : Internal error in RDB reading function at rdb.c:468 -> Unknown RDB string encoding type 32

Expected behavior

How to see which data is problematic

Additional information

Redis 4.0.9

Comment From: oranagra

@LIANGCHANGYONG was that RDB file produced by the same redis version? on the same machine? are you using redis modules? is there anything useful in the redis log prior to this error? maybe redis-check-rdb can provide more information.