Http.get not doing anything on Android only

Ionic Framework ionic-v3
1

Hello, I have a very basic code running perfectly fine on web and on iPhones :

       loader.present();
       this.http.get('http://validurl.fr', { responseType: 1 }).subscribe(function(answer) {
                loader.dismiss();
        }, function(error) {
                loader.dismiss();
        })

So on web and iPhone, there is a loader showing that is dismissed quickly.
But on Android the loader won’t dismiss… Anyone has an idea of where my problem can be ?

Regards,
Bastien