'uploadAll' event emitter not working after fail

[JaePhoenix]

Thanks for the great project. I am just experiencing one little issue.

When I emit the uploadAll event, I am unable to emit the event again, whether it fails or succeeds.

I think the issue is that there is already a file in the queue, so the uploadAll event does not fire.
When calling the 'cancelAll' or 'cancel' emitter, still no luck.
The only way to fix this issue is to call the 'remove' or 'removeAll' event, but that removes the files from the queue, meaning the user has to choose the same file/new files every time the event needs to be sent.

Is there any workaround on this?

I took a look at #428 but the workaround there does not work for me.