AwsS3Multipart plugin cancels upload with uploadId===null

[mattes3]

I have started an upload of five big files (about 260 MB each). I have passed an options object to the plug-in like this:

this.uppy.use(AwsS3Multipart, {
  createMultipartUpload: (file) => {...},
  abortMultipartUpload: (file, { uploadId, key }) => {...},
  ...
});

Uppy started the first 2 of the 5 uploads (createMultipartUpload was called twice).

Suddenly, I clicked the cancel button ("X") on one of the other 3 uploads that had not started, yet. abortMultipartUpload was called with uploadId === null. My code did not expect that and crashed.

Is this the expected behavior or is this a bug?

[goto-bus-stop]

Yes, that sounds like a bug, we don't need to call abortMultipartUpload on uploads that haven't started yet!