Spring RTS Engine

Hi everybody,
I'm trying to setup a uberserver (under Linux) to play spring on a lan . The uberserver seems to be running. Using weblobby, I can connect on localhost to the uberserver (and also from another computer). The problem is that I am unable to create any battleroom. The window appears, I fill the form and then nothing happens, no battle is created (although it works on the official spring server). There must be something wrong with the uberserver config but I can't see what.
Any Idea ?
Best

PS: in fact I finally got an error message: "There was a problem creating a new battleroom. The autohost has failed to spawn in 30 seconds."

check server.log

Weblobby doesn't currently support direct hosting (that tab is disabled). Like Zklobby it uses springie autohosts which are only available on the official server. Use Springlobby to host a game on your lan.

OK.
I have issues with Springlobby. I will open a new thread to ask about this point.
Thx