Error when bulk uploading a map using Import 3d (HTTP -1)

I wanted to import a map that was a little large, though I’ve been encountering this error where it says, PublishService AssetUpload failed. Info: single part asset create call failed HTTP StatusCode: -1, Message:
I don’t know a fix, though I looked on the devforum and found nothing about HTTP -1
Here are some screenshots:
image
image|553x312,
I have bug report access though I’m not sure if this is a problem on my end or not, and if there’s an easy fix for it