I tried to visualize 3D polytope with $p->VISUAL; but I got a message in terminal ERROR: could not provide all required input properties at input line 1. I typed by hand: $n=new Matrix<Rational>([[-3,1,0,0,0],[-3,0,1,0,0],[-3,0,0,1,0],[-3,0,0,0,1],[-9,1,1,0,0],[-9,0,1,1,0],[-9,0,0,1,1],[-27,1,1,1,0]...

Hello everyone, I am new here and I started with easy examples. In order to visualize a pentagon, I really got the visualization but in terminal I got the message about the error. In other examples (all polytopes are 2-dimensional), I have the same message: polytope > (evince:2430): Gtk-CRITICAL **:...