Flakehub account required error

[eureka-cpu]

I'm getting this error just adding the magic nix cache action to a build:

  2025-06-20T23:07:14.130829Z ERROR magic_nix_cache: FlakeHub: cache initialized failed: Unauthenticated: FlakeHub cache error: HTTP 401 Unauthorized: "User is not authorized for this resource."
    at magic-nix-cache/src/main.rs:370

Error: Unable to authenticate to FlakeHub. Individuals must register at FlakeHub.com; Organizations must create an organization at FlakeHub.com.