Raw image not detected

[rochapablo]

"react-native-fetch-blob": "^0.10.8"
"react": "16.0.0-alpha.12"
"react-native": "^0.48.4"

import RNFetchBlob from 'react-native-fetch-blob'

RNFetchBlob.fetch('POST', `http://...`, {
    Authorization : ...,
    'Content-Type': 'multipart/form-data'
}, [
    { name: 'avatar', filename: 'avatar.png', type: 'image/jpeg', data: base64 }
])
.then((response) => {
    console.log(response)
    resolve(response)
}).catch(reject)

Where base64 is the data: '/9j/4AAQSkZJRg...

{
height: 4160,
width: 3120,
type: 'image/jpeg',
fileName: 'image-60aac343-91ca-4d2a-9cbb-1e853f85a7e9.jpg',
fileSize: 3693187,
path: '/storage/emulated/0/Pictures/image-60aac343-91ca-4d2a-9cbb-1e853f85a7e9.jpg',
data: '/9j/4AAQSkZJRg...
}

The error:

I/ExifInterface_JNI: Raw image not detected

What could I be missing?

[pampang]

I've encountered the same problem. What does this error means?