Amazon web services – The parameter MasterUserPassword is not a valid password. operation error RDS

I do not think it is my password problem. I use the aws secretsmanager get-secret-value --secret-id db-password to check the password, there is no special characters in it. It still told me that:`Error: creating RDS DB Instance (csye6225): operation error RDS: CreateDBInstance, https response error StatusCode: 400, RequestID: d45ec645-b0d1-4902-b769-2dcc448cd993, api error InvalidParameterValue: The parameter MasterUserPassword is not a valid password. Only printable ASCII characters besides ‘/’, ‘@’, ‘"’, ‘ ‘ may be used.

I will show the code here and hope somebody could help me figure it out

resource "aws_secretsmanager_secret" "db_password" {
  name                    = "db-password"
  description             = "Database password for RDS"
  kms_key_id             = aws_kms_key.secret_manager_key.id 
}

resource "aws_secretsmanager_secret_version" "db_password_version" {
  secret_id     = aws_secretsmanager_secret.db_password.id
  secret_string = jsonencode({
    password = random_password.db_password.result
  })
}

resource "random_password" "db_password" {
  length  = 16
  special = true
  override_special = "!#$%&()*+,-./:;<=>?@[\]^_`{|}~"
}
resource "aws_db_instance" "csye6225" {
  allocated_storage      = 20
  engine                 = "postgres"
  engine_version         = "14.13"
  instance_class         = "db.t3.micro"
  identifier             = "csye6225"
  username               = var.db_username
  db_name                = var.db_name
  parameter_group_name   = aws_db_parameter_group.csye6225.name
  db_subnet_group_name   = aws_db_subnet_group.csye6225.name
  vpc_security_group_ids = [aws_security_group.db_sg.id]
  publicly_accessible    = false
  multi_az               = false
  skip_final_snapshot    = true

  storage_encrypted      = true
  kms_key_id             = aws_kms_key.rds_kms_key.arn
  password              = data.aws_secretsmanager_secret_version.db_password_version.secret_string

  tags = {
    Name = "CSYE6225RDSInstance"
  }
}

data "aws_secretsmanager_secret_version" "db_password_version" {
  secret_id = aws_secretsmanager_secret.db_password.id
}

I have tried a lot of time and the error still shown and the db-password is
"SecretString": "{"password":"uWC0UVl1sCzc02gt"}",
"VersionStages": [
"AWSCURRENT"
],
I do not think it is an invalid password