Redis [QUESTION] The command keys maybe generate the null string?

Platform: Windows 10 Redis Version: Redis-x64-3.2.100

I use the command KEYS and trace the tcp stream, found that there are the null string. like the followings:

I confusing with that. Why the key is the null?

Comment From: madolson

An empty string is a valid key name in Redis. Can you check to see if there is actually a key with an empty string for the key name?

Comment From: zh1an

An empty string is a valid key name in Redis. Can you check to see if there is actually a key with an empty string for the key name?

OK，I'll Check it.