I am trying to upload a world with a datapack to my realm so that that realm may have a datapack. This stopped at 2.4% and then said "Upload Failed! -1" This made me think I jsut couldn't upload worlds with datapacks to my realm. So, I created a completely new world called test, and then I left and attempted to upload THAT to realms. It failed, stopping at 2.4% again with the exact same error message. I can't upload ANY world to my realms, which is really annoying. Is there a way to fix this? This is an image of the error message.

My internet is fine, but I can't test this on another device for the time being. My firewall should be okay, it's fully open for Minecraft. I can create new worlds, but I just can't upload any.

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    The usual questions: Do you have an internet connection, is there a firewall/antivirus/…, is your internet reasonably fast, does the same happen on another device/network/…? – Fabian Röling May 11 at 17:43

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