Can't upload a world to my realm on Nintendo Switch

When I try to upload my world (which is about 80 GB) The progress bar is instantly cut off by an error message in the middle of the screen that says:

"An error has occurred".

Afterwards a message appears on the top of the screen with an achievement jingle. This time it says

"Export failed"

I recorded it, but the mp4 file was too big to attach to this post so I created an unlisted youtube clip which should be imbedded [here |https://youtu.be/5VXxegvW7Dc]