Hi, on a Blog_entry Page Type that is setup to use in Composer, I've placed a Stack. And on that Stack-Block I've set the Composer Settings like this: 'Include Block in Composer' checked. Block Name: Author.

Now trying to write a new blogpost with composer, I see the Stack (with its contents). The Block itself is not clickable, but the Name is. In this case 'Author'. (see image)
But clicking it gives me an error: 'no such file' and'failed opening' (see image).

Is there a way to use Stacks in Composer?

Love to hear.
Cheers, Maureen