KeyError visit_node question

[shunana]

Hi
I have a question. I am using the vrpy to solve a VRP problem, so far I have created a graph as guided, then when I try to solve the problem I get the following error.

What does that exactly referer to ? As I can see it is connected to other nodes, and sink.
Hope that you can help, thanks

[Kuifje02]

Wow that is a funky node name ☺️ Try using a name without any special characters, including ´- ´ and see if that does the trick.

[shunana]

Yeah 😅 I will try and let you know ;)

[shunana]

Thanks ! it worked :)