Verifying world 100% and then upload failed 500 Java Edition

I downloaded 3 data packs (Vanilla Tweaks) and I put them into the world data pack folder and tried to upload the world to the realm and it takes around 3-5 minutes for it to download and it gets to 100% and stays there for another 3-5 minutes and then it says upload failed 500.

Im not sure what I can do to fix the issue, but any help is greatly appreciated