Terraform create Cloud SQL replica alway get unkown provider error

Question

Here is my tf files： https://gist.github.com/Rukeith/bd194e808adb3ecfe982a7bdda9952a4

Terraform Version：

Terraform v0.12.6
+ provider.google-beta v2.12.0
+ provider.random v2.2.0

Terraform got an error, while cloud SQL read replica finish creation complete

And if I want to update the cloud sql replica setting, I got an error below.

Second example：

resource "google_compute_firewall" "egs" {
  provider = "google-beta"

  name           = "egs-firewall"
  network        = "default"
  enable_logging = true

  target_tags   = ["egs"]
  source_ranges = ["0.0.0.0/0"]

  allow {
    protocol = "tcp"
    ports    = ["8080"]
  }
}