expo: FileSystem.copyAsync hanging on iOS

I’m using SDK 24.0.0 and I’m trying to copy an image file created using takePictureAsync and the ImageManipulator to a more permanent location using FileSystem.copyAsync. However on iOS (physical device) the call to FileSystem.copyAsync never returns, it seems to hang with no errors but only on iOS, it all works great on Android (physical device). Any ideas? Thanks!

The flow is as follows:

1. Take picture with takePictureAsync

    this.camera.takePictureAsync().then(data => {
        this._resizeImage(data.uri);
    });

1. Resize the image using the ImageManipulator

    const manipResult = await ImageManipulator.manipulate(
        image,
        [{ resize: { height }}]
    );

1. Move image to permanent location

 const filename = new Date().getTime() + '.jpg';
 const image = Expo.FileSystem.documentDirectory + filename;

 await Expo.FileSystem.copyAsync({
      from: 'image uri',
      to: image
 });

Like I said it works fine on Android device and seems to only be an issue on iOS device, let me know if you need more information.