botocore custome waiter doesn't exit on condition met

Question

I am trying to make a custom waiter for CloudWatch.get_query_results() based on this. I did as the instruction says, a CustomWaiter base class then I have a LogQueryWaiter extend the base class, which is as follow

class QueryState(Enum):
    SUCCESS = "Complete"
    FAILURE = "Failed" or "Timeout"


class LogQueryWaiter(CustomWaiter):
    """Wait for a log query to finish"""
    def __init__(self, client, delay=10, max_tries=60, matcher="path"):
        acceptors = {"COMPLETED": QueryState.SUCCESS, "FAILED": QueryState.FAILURE}
        super().__init__(
            "LogQueryComplete",
            "GetQueryResults",
            "status",
            acceptors,
            client,
            delay,
            max_tries,
            matcher,
        )
    def wait(self, query_id:str) -> None:
        self._wait(queryId=query_id)

The problem is that it gets stuck in the waiter when calling LogQueryWaiter.wait(). From the logging info in the base class I can see the acceptor condition is met but the waiter keeps waiting.

I don't understand where it went wrong. Any help would be appreciated, thanks!