issue running erlworld

[sarini68]

Dear authors,
Maybe you are not just working on this project. However, I find it very interesting and useful (there are no game libraries for Erlang not just focusing on massive game servers). I've tried to follow (and tinkering), and when I run the examples I got the same error (which I suppose is related to the use of glib on ubuntu, that I'm running under WSL). The message error (it seems a warning but indeed is blocking and nothing run) is the following:
(Erlang:8464): GLib-WARNING **: 11:11:53.402: In call to g_spawn_sync(), exit status of a child process was requested but ECHILD was received by waitpid(). See the documentation of g_child_watch_source_new() for possible causes.
I would be very glad whether someone of you could provide me some suggestions on how to solve this, many thanks