More log with `BULK` command

[tqiao-harmonicinc]

Thanks for the great project. Looks like when I send a single PATCH command with wrong id, it will show the following warning in the log (e.g., triggered in set_reply)

Route not found

However, if I send a BULK command with some wrong id, it will not log similar info. The only place that shows something is wrong is from the request response, e.g.,

[
    {
        "code": 404,
        "error": "Not Found",
       ...
    }
]

Could we add similar log for BULK command (to make it consistent with single?

Thanks!