Board Game Arena

How do I write to the game log?
I thought this is done via

self::notifyPlayer and/or self::notifyAllPlayers

but when I run my (currently very rudimentary ...) game vie Express start, I don't see anything in the log, just under
< history_history

What am I missing ... ?

What are you writing and when? notify message will not reach the end if you send them in setup method for example
or if there exception during action execution