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Put the log inside an apply:
```privateSubnetIds.apply(ids =&gt; <http://pulumi.log.info|pulumi.log.info>(`Private subnet IDs: ${ids}[0]`))```


wow, that worked, thanks a lot!
Do you know why this syntax works and my form didn't?

Because as the error message says you can't meaningfully call toString on an Output&lt;T&gt;. An output is kind of like a promise so you have to wait for it's result (by using apply).

Right,
so you mean that this `aws.ec2.getSubnetsOutput(tagsPrivate).apply(sn =&gt;  sn.ids)`  will not really return list of ids ?

It will return an Output of a list of ids

<https://leebriggs.co.uk/blog/2021/05/09/pulumi-apply> might help with understanding