Amazon Rekognition“请求的图像格式无效”

Always getting same error from CompareFaces() method. I've tried different image format, image size, image type, various encodings (or none of them). Nothing helped me here. Please give me a tip what should I do or point on my mistake. Thank you!

go version go1.12.7 linux/amd64, AWSSDKVersion = "1.23.17"

import (
"bytes"
"encoding/base64"
"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/rekognition"
"github.com/aws/aws-sdk-go/service/s3"
"io/ioutil"
"log"
"net/http"
"os"
)

func main() {
creds := credentials.NewCredentials(
    &credentials.StaticProvider{Value: credentials.Value{
        AccessKeyID:     "", // insert creds here
        SecretAccessKey: "",
    }},
)

var myBucket = "my-very-unusual-and-odd-test-bucket"

imgFile, _ := os.Open("path.JPEG")
defer imgFile.Close()

buf, _ := ioutil.ReadAll(imgFile)
base64Text := []byte(base64.StdEncoding.EncodeToString(buf))

awsSess, _ := session.NewSession(&aws.Config{
    Credentials: creds,
    Region:      aws.String("us-west-2"),
    LogLevel:    aws.LogLevel(aws.LogDebug),
})

svc := s3.New(awsSess)
bucket := &s3.CreateBucketInput{
    Bucket: aws.String(myBucket),
}
svc.CreateBucket(bucket)

svc.PutObject(&s3.PutObjectInput{
    Bucket:             aws.String(myBucket),
    Key:                aws.String(myBucket + "/photo"),
    Body:               bytes.NewReader(base64Text),
    ContentLength:      aws.Int64(int64(len(base64Text))),
    ContentType:        aws.String(http.DetectContentType(base64Text)),
    ContentDisposition: aws.String("attachment"),
})

input := &s3.ListObjectsInput{
    Bucket:  aws.String(myBucket),
    MaxKeys: aws.Int64(50),
}

objects, _ := svc.ListObjects(input)
svcR := rekognition.New(awsSess)

for _, object := range objects.Contents {
    key := *object.Key

    input := &rekognition.CompareFacesInput{
        SimilarityThreshold: aws.Float64(90.000000),
        SourceImage: &rekognition.Image{
            Bytes: base64Text,
        },
        TargetImage: &rekognition.Image{
            S3Object: &rekognition.S3Object{
                Bucket: aws.String(myBucket),
                Name:   aws.String(key),
            },
        },
    }

    _, err := svcR.CompareFaces(input)
    if err != nil {
        log.Fatal(err)
    }
}}