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Your trying to console.log the output values, you want to take the Output&lt;T&gt; call apply and do the console.log _inside_ the apply so that it can see the actual string value.
That should help your debugging

Thanks for the reply. I am pretty sure I have it inside the apply.

```snapshotRedirectionCnames.apply(cnames=&gt;{
    cnames.split("\n").forEach(function(cname){
      const output = pulumi.interpolate`${cname}`
      console.log(`snaptshotRedirectCnames not empty!`)
      console.log(`######################`)
      console.log(`${snapshotRedirectionCnames}`)
      console.log(`######################`)
      const network = output.apply(cname =&gt; pulumi.interpolate`${cname.split('-v')[0]}`)
      console.log(`######################`)
      console.log(`${network}.${xtzshotsZone.name}`)
      console.log(`######################`)
    })
  })```
Even if I change
``` const network = output.apply(cname =&gt; pulumi.interpolate`${cname.split('-v')[0]}`)```
to...
```const network = output.apply(cname =&gt; cname.split('-v')[0])```
Same error :cry:

I meant things like:
```      const network = output.apply(cname =&gt; pulumi.interpolate`${cname.split('-v')[0]}`)
      console.log(`######################`)
      console.log(`${network}.${xtzshotsZone.name}`)```
network there is an Output&lt;T&gt; so the console.log isn't going to be able to print it

```network.apply(v=&gt;console.log(`${v}.${xtzshotsZone.name}`))```
Gives me same error

```const snapshotRedirectionCnames = snapshotRediretionCnames(allSubdomains)
if(snapshotRedirectionCnames){
  snapshotRedirectionCnames.apply(cnames=&gt;{
    cnames.split("\n").forEach(function(cname){
      const output = pulumi.interpolate`${cname}`
      const network = output.apply(cname =&gt; pulumi.interpolate`${cname.split('-v')[0]}`)
      console.log(`######################`)
      network.apply(v=&gt;console.log(`${v}.${xtzshotsZone.name}`))
      console.log(`######################`)
    })
  })
}```
Is empty and it looks like the next iteration is erroring
```    ######################
    ######################
    mainnet.Calling [toString] on an [Output&lt;T&gt;] is not supported.
    To get the value of an Output&lt;T&gt; as an Output&lt;string&gt; consider either:
    1: o.apply(v =&gt; `prefix${v}suffix`)
    2: pulumi.interpolate `prefix${v}suffix`
    See <https://pulumi.io/help/outputs> for more details.
    This function may throw in a future version of @pulumi/pulumi.```