Upload Image Ionic + S3

const options: CameraOptions = {

  quality: 100,
  correctOrientation: true,
  destinationType: this.camera.DestinationType.FILE_URI,
  encodingType: this.camera.EncodingType.JPEG,
  mediaType: this.camera.MediaType.PICTURE,
  sourceType: sourceType

}

// Get the picture
this.camera.getPicture(options).then((imageData) => {
  console.log(imageData);
  let loading = this.loadingCtrl.create();
  loading.present();

  // Resolve the picture URI to a file
  this.file.resolveLocalFilesystemUrl(imageData).then(oneFile => {

    // Convert the File to an ArrayBuffer for upload
    this.file.readAsArrayBuffer(this.file.applicationDirectory, oneFile.name).then(realFile => {
      let type = 'jpg';
      let newName = this.awsProvider.randomString(6) + new Date().getTime() + '.' + type;

      // Get the URL for our PUT request
      this.awsProvider.getSignedUploadRequest(newName, 'image/jpeg').subscribe(data => {
        let reqUrl = data.signedRequest;

        // Finally upload the file (arrayBuffer) to AWS
        this.awsProvider.uploadFile(reqUrl, realFile).subscribe(result => {

          // Add the resolved URL of the file to our local array
          this.awsProvider.getSignedFileRequest(newName).subscribe(res => {
            this.images.push({key: newName, uri: res});
            loading.dismiss();
          });
        });
      });
    });
  }, err => {
    console.log('err: ', err);
  })
}, (err) => {
  console.log('err: ', err);
});

}

Some who knows how to upload image file from local file directory? I have follow the tutorial from https://devdactic.com/ionic-aws-nodejs-2/ .
Error ( err: DOMException: A URI supplied to the API was malformed, or the resulting Data URL has exceeded the URL length limitations for Data URLs.)