Error on saving new app configuration in workspace marketplace sdk

[tlonist]

When I update the app configuration, for some reason I keep getting the error message below.
My app is under review at the moment. Should I delete the submission process entirely and start anew? Has anybody experienced it before?

    {
        "errorResult": {
            "error": {
                "code": 9,
                "message": "Precondition check failed.",
                "details": [
                    {
                        "@type": "type.googleapis.com/google.cloud.clientapi.v2.HttpStatus",
                        "code": 400
                    }
                ]
            }