I recently got realms a month ago and everyday ive been trying to get my 160mb minecraft world onto the realm but every time its in the middle of replacing world it says an error has occured Is there any way to fix this ? please!!!

Thank you for your report!
We're tracking this issue in 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. Please also try to keep the summary specific to the issue and just include the details in the description.

Quick Links:
📓 Issue Guidelines – 💬 Community Support – 📧 Mojang Support – ✍️ Feedback and Suggestions – 📖 Game Wiki – 📖 FAQs