policies generated by policy playground cannot be expanded

[ndr-brt]

Current Behavior

If I generate the simplest policy in the playground:

{
  "@context": [
    "http://www.w3.org/ns/odrl.jsonld",
    "https://w3id.org/tractusx/edc/v0.0.1",
    {
      "@vocab": "https://w3id.org/edc/v0.0.1/ns/"
    }
  ],
  "@type": "PolicyDefinition",
  "@id": "{{POLICY_ID}}",
  "policy": {
    "@type": "Set",
    "permission": [
      {
        "action": "use",
        "constraint": [
          {
            "leftOperand": "BusinessPartnerNumber",
            "operator": "eq",
            "rightOperand": "<bpnNumber>"
          }
        ]
      }
    ]
  }
}

and I try to expand it on the JSON-LD Playground
I get this error:

jsonld.InvalidUrl: Dereferencing a URL did not result in a valid JSON-LD object. Possible causes are an inaccessible URL perhaps due to a same-origin policy (ensure the server uses CORS if you are using client-side JavaScript), too many redirects, a non-JSON response, or more than one HTTP Link Header was provided for a remote context.

Expected Behavior

to being able to expand the policy correctly.
The policy actually works if ingested in the Tractus-X connector because the context it's cached there, but the https://w3id.org/tractusx/edc/v0.0.1 url should point to the actual file uploaded somewhere to permit eventually other connectors or tools to being able to expand it correctly.

[farhin23]

Hi @lgblaumeiser, you can assign this issue to me.