Minimum Terraform version ?

[JulienStitelet]

Hi,

I read in a doc (this one aws-tf), the minimum version is 0.14, but trying with version 1.0, I have this error:
An argument named "nullable" is not expected here.

Indeed, seems this feature "nullable variable" has been added in 1.1.

I think the doc is misleading.
So, what is the minimum terraform possible version ?

Thank you