InvalidClientTokenId: The security token included in the request is invalid - go

Question

I make project Go gin
I make send an SMS message for user phone number
When the implementation of the code is completed and the program is executed, the following error occurs
InvalidClientTokenId: The security token included in the request is invalid.
I think the error course missing token.
but I don`t know get how to get token
this below my code
func PushSms(phoneNumber, code string) error {
fmt.Println("create session")
AccessKey := os.Getenv("AWS_ACCESS_KEY")
SecretAccessKey := os.Getenv("AWS_SECRET_ACCESS_KEY")
sess, err := session.NewSession(&aws.Config{
Region: aws.String("ap-northeast-1"),
Credentials: credentials.NewStaticCredentials(AccessKey, SecretAccessKey, ""),
})
if err != nil {
log.Fatalln(err)
}
svc := sns.New(sess)
input := &sns.PublishInput{
Message: aws.String("test" + code),
PhoneNumber: aws.String(phoneNumber),
}
result, err := svc.Publish(input)
if err != nil {
log.Println(err)
}
fmt.Println(result)
return nil
}
thanks

Answer 1

this issue change part of session.NewSession change code
sess, err := session.NewSession(&aws.Config{
Region: aws.String("ap-northeast-1"),
Credentials: credentials.NewStaticCredentials(AccessKey, SecretAccessKey, ""),
})
to
.env
AWS_ACCESS_KEY=access_key
AWS_SECRET_ACCESS_KEY=secret_access_key
AWS_REGION=ap-northeast-1
sess, err := session.NewSession()
thanks