Error: Reference to undeclared local value

A local value with the name "ecs_task_role" has not been declared.

Solution: review carefully your are using the same names defined in your locals block

How to add a suffix to a variable:

 name             = "${local.name}-yoursuffix"

Related

• locals.tf
• locals: local.
• Terragrunt locals blocks
• Error: Unsupported attribute

See also

• terraform plan: [ -refresh-only | -lock=false | -target | -var-file | will be created | --help], Terraform plan errors, Terraform plan examples, Terraform plan execution errors, (known after apply)
• Terraform local values, local., locals.tf