Error uploading world with datapacks to Realms

I am trying to upload a world with some datapacks to Minecraft Realms, but when the upload finishes and the verification step begins, it gives the error "Upload Failed (500)".

To install the datapack, I have downloaded the world, and copied the folders to the correct folder inside the world, and when uploading back, that's when the error occurred.

Is there a fix for this problem?

Thank you in advance.