Forge AR/VR Toolkit manifest always returns status failed

I've been trying to use the Autodesk Forge AR/VR Toolkit from http://forgetoolkit.com/#/unityPackage to get the Revit 2020 sample project rst_basic_sample_project.rvt from https://forge.autodesk.com/developer/learn/viewer-app/setup which I already translated to SVF format working in Unity. The model is available under the model URN in Forge Viewer as shown in the image attached.

Following the documentation at https://app.swaggerhub.com/apis/cyrillef/forge-ar_kit/1.2.1#/ARVR-Toolkit/create_scene I ran the arkit requests in sequence. All responses look fine and the corresponding data is created as the following response to the GET request https://developer-api-beta.autodesk.io/arkit/v1/:urn/scenes/:sceneid shows:

{
    "prj": {
        "bucket": "unity-test-02",
        "object": "rst_basic_sample_project.rvt",
        "urn": "dXJuOmFkc2sub2JqZWN0czpvcy5vYmplY3Q6dW5pdHktdGVzdC0wMi9yc3RfYmFzaWNfc2FtcGxlX3Byb2plY3QucnZ0",
        "view_id": "2b8b1cf8-31bf-7e71-dfb5-e1d4342ddb82"
    }
}

After triggering the POST request https://developer-api-beta.autodesk.io/arkit/v1/:urn/scenes/:sceneid with response:

{
    "result": "created",
    "urn": "dXJuOmFkc2sub2JqZWN0czpvcy5vYmplY3Q6dW5pdHktdGVzdC0wMi9yc3RfYmFzaWNfc2FtcGxlX3Byb2plY3QucnZ0",
    "acceptedJobs": {
        "output": {
            "formats": [
                {
                    "type": "arkit",
                    "scene": "unity-04"
                }
            ]
        }
    }
}

I run the GET request https://developer-api-beta.autodesk.io/modelderivative/v2/arkit/:urn/manifest to check the job's status. It always returns "status": "failed" for any of the arkit scenes I created so far. Here is the "outputType": "arkit" part of the response:

...
        {
            "status": "failed",
            "outputType": "arkit",
            "children": [
                {
                    "status": "failed",
                    "reason": "unknown",
                    "type": "resource",
                    "name": "unity-01"
                },
                {
                    "status": "failed",
                    "reason": "unknown",
                    "type": "resource",
                    "name": "unity-02"
                },
                {
                    "status": "failed",
                    "reason": "unknown",
                    "type": "resource",
                    "name": "unity-03"
                },
                {
                    "status": "failed",
                    "reason": "unknown",
                    "type": "resource",
                    "name": "unity-04"
                }
            ],
            "progress": "complete"
        }
    ],
    "hasThumbnail": "true",
    "progress": "complete",
    "type": "manifest",
    "region": "US",
    "version": "1.0",
    "status": "success"
}

I tried it with Revit 2022 and Navisworks 2020 files as well as using SVF2 format instead of SVF always with the same result. The hint "reason": "unknown" is not very helpful.

Thanks!

I don't have an answer for the AR/VR Toolkit issue unfortunately but I would like to suggest a different approach of bringing Forge models into Unity, one that I've been proposing to Forge customers for a while now, and that's been getting good feedback:

There's a Node.js library - https://github.com/petrbroz/forge-convert-utils - that you can use to convert SVF files from Forge into the open 3D exchange format called glTF. With your designs in the glTF format you can then leverage the rich ecosystem of utilities such as Unity or Unreal Engine loaders, geometry optimizers, etc. Recently I've put together a sample app that showcases this approach: https://github.com/petrbroz/forge-unity-poc.