Error on uploading world in minecraft realms

Hello,

I pay 2 times for the minecraft realm in the mcpe, and when I was to upload my world to put in the realm, I get a messange that got a ERROR to do the upload

If I can't do the upload, I need the refund.
Or what can I do to fix this error? Bc the map was created in 1.14 and I think the realm is in 1.16, but the world updated to the new version.