I am having a very hard time uploading me and my friends survival world. We started it in the early 1.17 snapshots and stopped playing it before the cave gen changes came. We want to proceed with our adventure in the new 1.17 update but can't because realms is being a PAIN in the neck to upload the world too. The file is pretty massive but it keeps saying "upload failed -1" after it looks like it's gonna work. Please tell me what I am doing wrong.