Error downloading, uploading and replacing worlds larger than 50 mb

Thank you for your report!
We're tracking this issue in REALMS-419 and REALMS-474, so this ticket is being resolved and linked as a duplicate.

If you would like to add a vote and any extra information to the main ticket it would be appreciated.

If you haven't already, you might like to make use of the search feature to see if the issue has already been mentioned.

Quick Links:
📓 Bug Tracker Guidelines – 💬 Community Support – 📧 Mojang Support
📓 Project Summary – ✍️ Feedback and Suggestions – 📖 Game Wiki – 📖 FAQs
_{-- I am a bot. This action was performed automatically! If you think it was incorrect, please notify us on Discord or Reddit}