Font Unavailable in JuliaHub's Pluto

I recently uploaded my first notebook to JuliaHub. However, I’ve encountered an issue where, due to the absence of font files on the cloud machine, I cannot perform my visualizations. Any advice to rectify this would be appreciated. Thanks.

For reference, here’s the code exemplifying the “Font Unavailable” issue. Am I overlooking something?

using Fontconfig; list(Fontconfig.Pattern())