Put the summary of the bug you're having here
What I expected to happen was...:
Be able to chat to users logged on
What actually happened was...:
Shut down or said 'Cannot send this message"
Steps to Reproduce:
1. Log in
2. Join Public Server
3. T to Chat
4. Crashes
Based on a crash report provided in this issue, I believe with high certainty that this report may be a duplicate of MC-20163. You can view all information known about this specific crash at MCX-777.