Wondering if this module is up to date a working?

[draring]

Trying to use this module and continually seeing this error message (and others just like it):

on .terraform/modules/xyz.subscription_filter_label/outputs.tf line 18, in output "attributes":
18: value = "${null_resource.default.triggers.attributes}"

So - is this a me issue or something else? I'm currently using Terraform v0.14.9