Presign link for download not working with aws sdk golang

Hello guys, I have some issues to make work a DO spaces presign url in aws golang sdk. I have the following code snippet:

import (
	"github.com/aws/aws-sdk-go/aws"
	"github.com/aws/aws-sdk-go/aws/credentials"
	"github.com/aws/aws-sdk-go/aws/session"
	"github.com/aws/aws-sdk-go/service/s3"
	"github.com/labstack/echo"
	"log"
	"net/http"
	"parameters"
	"time"
)

key := parameters.ObjectStorageKey
	secret := parameters.ObjectStorageSecret

	s3Config := &aws.Config{
		Credentials: credentials.NewStaticCredentials(key, secret, ""),
		Endpoint:    aws.String(parameters.ObjectStorageEndpoint),
		Region:      aws.String(parameters.ObjectStorageRegion),
	}

	newSession, err := session.NewSession(s3Config)
	if err != nil {
		return "", err
	}

	s3Client := s3.New(newSession)

	req, _ := s3Client.GetObjectRequest(&s3.GetObjectInput{
		Bucket: aws.String(parameters.ObjectStorageBucketErp),
		Key:    aws.String("MY_OBJECT_KEY"),
	})

	urlStr, header, err := req.PresignRequest(10 * time.Minute)
	if err != nil {
		log.Print(err)
	}

        log.Print(urlstr)

It is generating the url, but when I put it to browser it gives me access denied error. When I generate a link in the control panel it is working without any issue.

What I experienced there is a difference in the link generated by my code and in the control panel.

Link generated in the control panel look like this:

https://fra1.digitaloceanspaces.com/MY_BUCKET/MY_OBJECT_KEY

Link generated by my code is like this:

https://MY_BUCKET.fra1.digitaloceanspaces.com/MY_OBJECT_KEY

I don’t know if its cause the problem or not, but I stuck here… Is there anything what I’m doing wrong?

Thanks!