Suppress INFO logs when running `vaultwarden -v`

I carefully considered about this problem, so I turned to open a discussion instead.
Well I use awk with shell scripts to check installed vaultwarden version, vaultwarden -v gives this output

But I don't have data/config.json. I don't want the first line.
Yeah I know awk has line counters but I just really don't want the first line.
So I added export LOG_LEVEL=off, but this does not help.

So what I want is: LOG_LEVEL=off should suppress [INFO] logs.