TF_STATE_BASE_ADDRESS variable?

When I try to run terragrunt locally, I got error

Call to function "get_env" failed: EnvVarNotFoundError: Required environment variable TF_STATE_BASE_ADDRESS - not found.

What should I put inside this variable? Is it provided by CI?

My project structure looks like this:

live/
  terragrunt.hcl
  dev/
    env.hcl
    mymodule/
       terragrunt.hcl

modules/
  mymodule/
    *.tf

I've also noticed TF_ROOT which probably is required too (?)

Also, how does it authenticate to AWS, do I need to pass Secret Token as a GitLab variable too?

Edited by Jacek