[MC-299556] Error 504 when uploading a world to Java Realms

When trying to upload world to java realms it says error 504. I have tried 5 times.

-On the vanilla launcher

-Optimizing the world

-Closing the realm

-On multiple versions

The files I attached are my world. I just bought realms and am upset.

Environment

1.21.7 vanilla launcher
World size 2.7gb before optimizing.

please fix this!

Please provide a complete copy of the world. The level.dat file alone is not enough.