My world won’t sync to cloud on Xbox X

I have 1.5Gb world and it’ll save games locally to the Xbox memory but when it comes to Saving and syncing to the mojang server/cloud it will become unable to do so. I have reset my cache and deleted and reinstalled the game but the problem still persists. Please fix as I’m moving platforms soon and need an up to date file to download.

This isn’t the first time this has happened, it’s occurred on a different account and corrupted that world forcing me to restart afresh on a new account.