Carpet plot rendering error

Hi! I created a carpet plot with a small set of points but I got an error while creating the plot.

Here a reproducible example:

In the console there is the following error:

Uncaught TypeError: Cannot read property '0' of undefined
    at e.exports (plotly-latest.min.js:7)
    at Object.t.setScale (plotly-latest.min.js:7)
    at Object.e.exports [as calc] (plotly-latest.min.js:7)
    at b (plotly-latest.min.js:7)
    at Object.m.doCalcdata (plotly-latest.min.js:7)
    at Object.r.plot (plotly-latest.min.js:7)
    at pen.js:64

Could you help me with that?