Chartjs-label - text are only empty boxes

I use the node-red-contrib-chart-image node to create a .png-file from my pie-chart. In general it is working, i get my pie chart in png, but I can´t see any text - the title is not visible and the text of the label are these empty boxes...

I have installed Node-RED in a Docker-Container with Alpine Linux OS.
ChartImage.json (2.1 KB)

Looks like a font issue to me. Possibly missing from the alpine image.
Have you tried on a non docker install?

Good luck getting any feedback - an issue was raised in 2020 (no comment from author)

You might have to fork + fix if you really need this.

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