Until yesterday I was able to join my brother's world, now I get the error code "crossbow" and am unable to join his world. I own a hard copy of MineCraft and have tried updating the game, disconnecting and reconnecting the WiFi, and pretty much everything else suggested by the Forums. Please help.
Related issues
Comments

Thank you for your report!
We're tracking this issue in MCPE-120491, 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