Dashboard won't display - stuck on "waiting for localhost"


I’ve been using duplicati for a few months now without problems. Today when I try to open it from the tray icon (which is red) The browser window opens but waits on “waiting for localhost” and the dashboard never displays. I’ve tried quitting duplicati and restarting it; restarting the PC (windows 10). I even tried downloading the latest version and installing it but still the same problem.

Is there any way for me to look at the logs to see what is going wrong? Any command line things I could try to get it working again?