TypeError: nodes[0] is undefined - custom priority parameter

[Mihailoff]

I'm using a custom priority parameter and getting the following error TypeError: nodes[0] is undefined

https://github.com/kurkle/chartjs-chart-sankey/blob/9dbd19faa27a67000403197ca6940a2c2931e357/src/layout.js#L215

nodes[0] assumes that there is always at least one element and this is not true in my case.

chartjs-chart-sankey@0.11.0 chart.js@3.8.2

[Mihailoff]

Don't know if this is related or not. In my data set, if I filter items with flow > 1 the error goes away.

[kurkle]

If you can, please provide a codepen or equivalent that reproduces the issue.