Package was not found (although it does exist)

[Potherca]

I was trying to load @muze-nl/metro-core from JsDelivr.

Although it is available from https://cdn.jsdelivr.net/npm/@muze-nl/metro-core/, it is not available from https://www.jsdelivr.com/package/npm/@muze-nl/metro-core, which shows:

Package @muze-nl/metro-core was not found.
Please retry in a few minutes and if the problem persists, file an issue on GitHub.

Is there something the author of the NPM package neglected to do? Or is there an issue on JsDelivr?