After a few hours of installing all the libraries, it worked. I still don't understand much of what I'm doing, but I managed to run riversolver.sh and view the outputs :) Does it support scenarios with multiple opponents?

Wow. Thank you for your support

For now I still struggle to make it work in two player's preflop (take a ton of time and computation resources). In the future if a lot of people ask for multiplayer I think I will write the code~