Zammad Chat Websocket Error - Centos 7

Infos:

  • Used Zammad version: 3.3.x
  • Used Zammad installation source: CentOS via RPM
  • Operating system: Centos 7.7.1908
  • Browser + version: Chrome 80.0.3987.149

Expected behavior:

Chat should open on external website, it does not

Actual behavior:

WebSocket connection to ‘ws://10.1.247.126:3000/ws’ failed: Error during WebSocket handshake: Unexpected response code: 404

Steps to reproduce the behavior:

Install Zammad with CentOS via RPM on fresh Centos 7.7.1908 installation, configure Chat channel with JS code on web page and refresh.