Please add to terraform block as you mentionned in the video

[sidsappal2]

backend "s3" {
bucket = "THE_NAME_OF_THE_STATE_BUCKET"
key = "some_environment/terraform.tfstate"
region = "us-east-1"
encrypt = true
kms_key_id = "THE_ID_OF_THE_KMS_KEY"
dynamodb_table = "THE_ID_OF_THE_DYNAMODB_TABLE"
}