The gauges in Super Tiles are an official feature natively built into SharpTools. The Custom Tiles are community driven efforts. For example, I put together two different gauge custom tiles โ one based on Gauge.js and the other based on Apex Charts:
The Gauge.js library was hosted on an external CDN called unpkg and when they updated their systems in April 2025, it looks like it broke their hosting of the Gauge.js library.
I reported the issue to the unpkg team, but never heard back so instead I recommend pulling the latest version of the Gauge Custom Tile code or manually updating it yourself.