We are receiving this message much too often.
As we are chatting, we type a msg and “Retry/Cancel” appears to the right.
The client is not disconnected from the network, nor is the server when this happens.
This happens in both direct message chats and public and private channels.
It happens a lot!
server version 5.4.0.
this happens to us multiple times a day in the following OS/client combos
windows 10 desktop client 4.1.2
windows 10 desktop client 5.4.0
Windows 10, desktop version 4.0.1
windows 8.1 4.1.2
ubuntu 18.04 mm client 4.1.2
Linux Mint 18.3 Sylvia Version 4.1.2
OSX mojave mm 4.1.2
Mac OS 10.10.5, MM desktop 184.108.40.206