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39feee8e3a
It used to return `$-1` in RESP2, now we will return `*-1`. This is a bug in redis 6.2 when COUNT was added, the `COUNT` option was introduced in #8179. Fix #10089. the documentation of [LPOP](https://redis.io/commands/lpop) says ``` When called without the count argument: Bulk string reply: the value of the first element, or nil when key does not exist. When called with the count argument: Array reply: list of popped elements, or nil when key does not exist. ```