Sankey diagram not working

[PabloAlbiol]

Hi,

I have been able to add different charts and diagrams from Plotly.js in Grafana successfully, but I don't get the Sankey to work. I get the following error:
No data: No trace found with data

And my processing script looks like this:
(Sankey Diagram example from https://plotly.com/javascript/sankey-diagram/)

var data = {
type: "sankey",
orientation: "h",
node: {
pad: 15,
thickness: 30,
line: {
color: "black",
width: 0.5
},
label: ["A1", "A2", "B1", "B2", "C1", "C2"],
color: ["blue", "blue", "blue", "blue", "blue", "blue"]
},

link: {
source: [0,1,0,2,3,3],
target: [2,3,3,4,4,5],
value: [8,4,2,8,4,2]
}
}

var layout = {
title: {
text: "Basic Sankey"
},
font: {
size: 10
}
}

return {
data: [data],
layout: layout
}

For some other chart types, I needed to change the default values of layout (xaxis) to make them work, but this didn't make any difference for the Sankey diagram.

Is there something I am missing? Or is this a known issue with the Plotly.js panel?

Thank you!