Error: Missing required argument

Ao realizar uma alteração onde foi acrescentado um novo Bucket, ao executar o comando terraform plan apresenta a mensagem (The argument "region" is required, but was not set.) conforme abaixo:

Waiting for the plan to start...

Terraform v0.14.4
Configuring remote state backend...
Initializing Terraform configuration...

Error: Missing required argument

The argument "region" is required, but was not set.

TENTATIVA

• adicionei a tag provider = aws.us-east-1 nos demais resource, mas não resolveu.

OBSERVAÇÕES

• Quando eu executava o comando "terraform plan" com o stage local ele pedia a região, eu colocava e rodava perfeito, depois que começamos a usar o stage remote que apresentou esses problemas.
• Erros apresentados após inclusão de resource com outro provider

ABAIXO main.cf

provider "aws" {
    alias = "us-east-1"
    region = "us-east-1"
}

provider "aws" {
    alias = "us-east-2"
    region = "us-east-2"
}

resource "aws_instance" "dev" {
  count = 2
  ami = "ami-00ddb0e5626798373"
  instance_type = "t2.micro"
  key_name = "terraform-aws"
  tags = {
    Name = "dev${count.index}"
  }
  vpc_security_group_ids = [aws_security_group.acess_ssh.id]
}

resource "aws_instance" "dev3" {
  ami = "ami-00ddb0e5626798373"
  instance_type = "t2.micro"
  key_name = "terraform-aws"
  tags = {
    Name = "dev3"
  }
  vpc_security_group_ids = [aws_security_group.acess_ssh.id]
  depends_on = [aws_s3_bucket.dev3]
}

resource "aws_instance" "dev4" {
  provider = aws.us-east-2
  ami = "ami-01aab85a5e4a5a0fe"
  instance_type = "t2.micro"
  key_name = "terraform-aws"
  tags = {
    Name = "dev4"
  }
  vpc_security_group_ids = [aws_security_group.acess_ssh_us_east_2.id]
  depends_on = [aws_dynamodb_table.dynamodb-homologacao]
}

resource "aws_s3_bucket" "dev3" {
  bucket = "rmerceslabs-dev3"
  acl    = "private"

  tags = {
    Name        = "rmerceslabs-dev1"
  }
}

resource "aws_s3_bucket" "homologacao" {
  bucket = "rmerceslabs-homologacao"
  acl    = "private"

  tags = {
    Name        = "rmerceslabs-homologacao"
  }
}

resource "aws_dynamodb_table" "dynamodb-homologacao" {
  provider = aws.us-east-2
  name           = "GameScores"
  billing_mode   = "PAY_PER_REQUEST"
  hash_key       = "UserId"
  range_key      = "GameTitle"

  attribute {
    name = "UserId"
    type = "S"
  }

  attribute {
    name = "GameTitle"
    type = "S"
  }
}