Warning: Backend configuration ignored

How do i get rid of this warning ?
│ Warning: Backend configuration ignored

│ on …/modules/main.tf line 40, in terraform:
│ 40: backend “http” {

│ Any selected backend applies to the entire configuration, so Terraform expects provider configurations only in the root module.

│ This is a warning rather than an error because it’s sometimes convenient to temporarily call a root module as a child module for
│ testing purposes, but this backend configuration block will have no effect.

this is how i declared my providers.tf:
terraform {
required_providers {

}
backend “http” {
address = “…”
lock_address = “…”
unlock_address = “…”
}
}

my file structure this way :
------PROJECT
----modules
-main.tf
-providers.tf
-variables.tf
----terraform
-main.tf