Cannot read property 'slice' of undefined


Server Setup Information

  • Version of Rocket.Chat Server: 3.10.4

  • Operating System: Ubuntu 20.04 LTS

  • Deployment Method: manuall installation

  • Number of Running Instances: 1

  • DB Replicaset Oplog: 200

  • NodeJS Version: v12.18.4

  • MongoDB Version: 4.0.22

  • Proxy: Running behind a nginx SSL Reverse Proxy

  • Firewalls involved:

Hi there,
I get the error message: “cannot read property ‘slice’ of undefined” when I want to send a message from the web interface. It doesn’t matter which channel I use. When I send a message from the app, only an empty field appears in the chat.

Does anyone have any idea why this is?

many Greetings