Creating Multiplayer Lobby gives 400 error

Creating Multiplayer Lobby gives 400 error. This might be the reason why my friend(s) are unable to see me.
I have port forwarding set up.

System Information

  • Operating System: MacOs 10.14.1
  • GPU: intel iris
  • Citra Version (found in title bar): Nightly 1100
  • Game: Pokemon ultra sun
  • Screenshot of Issue (include the full Citra window including titlebar):

Diagnostic Log
Upload your log file as an attachment by dragging & dropping.
citra_log.txt (3.3 KB)

In order to save a copy of the log, follow this guide:

I have set up my username and token already.

Close citra and open the folder ~/.local/share/citra-emu/config, delete qt-config.ini, open citra and put your username and token again, try to create a room.