[BUG] Problem with update-status event

[kahilah]

Module fails with the following error message:

23:03:37.801  ←[31mERROR ←[0m ←[1mwezterm_gui::termwindow←[0m > while processing update-status event: runtime error: C:\Users\xxx\.config\wezterm/events\update-status.lua:24: attempt to index a nil value (local 'theme')
stack traceback:
        C:\Users\xxx\.config\wezterm/events\update-status.lua:24: in function <C:\Users\xxx\.config\wezterm/events\update-status.lua:18>

I used nightly build and tested with latest stable bulid as well.

To Reproduce
Followed README