Check fails with "Graph ... is not a composition variant"

[sgarner]

Thanks for making this handy action. I had it working fine for a several months, but sometime in the past week the checks have begun to fail on every run with an error that looks like the following. (My last successful run was on 3 Jan 2023.) I haven't changed anything in my GitHub workflow or in the project config in Apollo Studio.

Maybe something has changed on the Apollo side that is breaking this action?

{
  "response": {
    "errors": [
      {
        "message": "Graph my-graph@prod is not a composition variant.",
        "extensions": {
          "code": "INTERNAL_SERVER_ERROR",
          "serviceName": "registry"
        }
      }
    ],
    "data": {
      "service": null
    },
    "status": 200,
    "headers": {}
  },
  "request": {
    "query": "\n    mutation SubgraphCheckMutation(\n      $graph: ID!\n      $variant: String!\n      $serviceName: String!\n      $proposedSchema: PartialSchemaInput!\n      $gitContext: GitContextInput!\n      $queryParameters: HistoricQueryParameters!\n    ) {\n      service(id: $graph) {\n        checkPartialSchema(\n          graphVariant: $variant\n          implementingServiceName: $serviceName\n          partialSchema: $proposedSchema\n          gitContext: $gitContext\n          historicParameters: $queryParameters\n        ) {\n          compositionValidationResult {\n            compositionSuccess\n            errors {\n              message\n              code\n              locations {\n                line\n                column\n              }\n            }\n          }\n          checkSchemaResult {\n            diffToPrevious {\n              severity\n              numberOfCheckedOperations\n              numberOfAffectedOperations\n              changes {\n                severity\n                code\n                description\n              }\n            }\n            targetUrl\n          }\n        }\n      }\n    }\n  ",
    "variables": {
      "config": "",
      "graph": "my-graph",
      "variant": "prod",
      "endpoint": "",
      "headers": "",
      "apolloKey": "***",
      "localSchemaFile": "./schema.graphql",
      "queryCountThreshold": "",
      "queryCountThresholdPercentage": "",
      "serviceName": "api",
      "validationPeriod": "P1W",
      "queryParameters": {
        "from": "604800"
      },
      "proposedSchema": {
        "sdl": "...SNIPPED..."
      },
      "gitContext": {
        "branch": "my-branch",
        "commit": "f023dc73242f4783d686732cdac666824bdd81b3",
        "committer": "sgarner",
        "message": "Merge 34f1e656ede5d3b56c291d93f4b38cbdae53e730 into 212b0831269d1098486146328eb03aa9718a126c",
        "remoteUrl": "https://github.com/sgarner/my-graph/commit/f023dc73242f4783d686732cdac666824bdd81b3"
      }
    }
  }
}

[paulrostorp]

I am facing the same issue... Did you find a solution @sgarner ?