World failed to upload to realm

Whenever I try to upload my world to a realm it sits there for 45 seconds and then it says an error occured giving me no reason to why it happened.

 

 

Expected Result: World Upload Finished Successfully

Observed Result: An error occured. 

 

Steps to reproduce:

 

1. Click Edit Realm Information

2. Click On Game Settings

3. Scroll Down Until You See Replace World

4. I select the world I want to replace

5. The screen sits there at initializing upload

6. Within 45 seconds I get an error occured I hit ok and the world wasn't successfully uploaded to my realm and now I'm a bit frustrated.

 

Can you please look into this issue and see what the problem is. If you need a copy of the world, I will link it below. If you know a solution to this problem, please let me know below.