ERROR: ray::RolloutWorker.__init__()

[bertanimre]

Hello,
I would like to use or-gym supply chain environments for my project. I am trying to learn the environments now.

While following the "Using Ray and DFO to optimize a multi-echelon supply chain" tutorial, I faced an error called "-- Exception raised in creation task: The actor died because of an error raised in its creation task, ray::RolloutWorker.init()".

I didn't understand the reason for the error because I followed the steps without changing them.
Could you check it?

Thanks in advance.

Best regards,
Bertan