Error occurs when selecting one or more images which needs to be downloaded from iCloud and there is no connectivity (to download them)

[ryaa]

This plugin uses [[PHImageManager defaultManager] requestImageDataForAsset:...] in imageToSandbox method. However this function only works for images that reside on the phones memory or that were recently fetched from iCloud by your app on any other one and if there is no connectivity this method returns nil for the image which causes the problem.

The plugin simply returns an error which is null and no other details.

For example, the camera plugin, when such a photo (which needs to be downloaded from iCloud) is selected by the user shows the below error dialog and prevents from selecting it

Is it possible to implement similar behaviour?

[ryaa]

I implemented the change to handle the above use case and return an error message if the photo is in iCloud and download fails - see #101