I'm running /self-service/login/browser API but it's always erroring out and returning the following error

{
    "error": {
        "code": 500,
        "status": "Internal Server Error",
        "request": "022394c0-fb4e-9334-b389-80f42fe68810",
        "message": "jsonnetsecure: ERROR: <https://storage.googleapis.com/bac-gcs-production/39c234344f66884f950fb26a451e1d694b37aa31a755d33e0a5e9fba81a80b9b0943c49beb480bcfcfcdc1470f0af8830c547ea2906cfd9a6fb9e12f1026ed65.jsonnet:4:3-9> Expected a comma before next field\n\n  traits: {\r\n\n"
    }
}{
    "id": "4ce6a913-bcfe-40dc-a91a-e1946c8b4951",
    "organization_id": null,
    "type": "browser",
    "expires_at": "2024-09-10T09:11:02.895534025Z",
    "issued_at": "2024-09-10T08:11:02.895534025Z",
    "request_url": "<https://dev-ory>.****.com/self-service/login/browser",
    "ui": {
        "action": "<https://dev-ory>.****.com/self-service/login?flow=4ce6a913-bcfe-40dc-a91a-e1946c8b4951",
        "method": "POST",
        "nodes": [
            {
                "type": "input",
                "group": "oidc",
                "attributes": {
                    "name": "provider",
                    "type": "submit",
                    "value": "google",
                    "disabled": false,
                    "node_type": "input"
                },
                "messages": [],
                "meta": {
                    "label": {
                        "id": 1010002,
                        "text": "Sign in with Google",
                        "type": "info",
                        "context": {
                            "provider": "Google",
                            "provider_id": "google"
                        }
                    }
                }
            },
            {
                "type": "input",
                "group": "default",
                "attributes": {
                    "name": "csrf_token",
                    "type": "hidden",
                    "value": "2KETOvfLxshOUbCgkNsM4MjvwXPLtb5K8le9huo9nH9UpdMrfl9NXfqg9KszHdYtmVfSsWxxCjuHuZvVPqbTPw==",
                    "required": true,
                    "disabled": false,
                    "node_type": "input"
                },
                "messages": [],
                "meta": {}
            }
        ]
    },
    "created_at": "0001-01-01T00:00:00Z",
    "updated_at": "0001-01-01T00:00:00Z",
    "refresh": false,
    "requested_aal": "aal1",
    "state": "choose_method"
}

You have a syntax error in your jsonnet snippet:

"message": "jsonnetsecure: ERROR: <https://storage.googleapis.com/bac-gcs-production/39c234344f66884f950fb26a451e1d694b37aa31a755d33e0a5e9fba81a80b9b0943c49beb480bcfcfcdc1470f0af8830c547ea2906cfd9a6fb9e12f1026ed65.jsonnet:4:3-9> Expected a comma before next field\n\n  traits: {\r\n\n"

your snippet:

function(ctx) { 
  userId: ctx.identity.id,
  customData: ctx.transient_payload.custom_data
  traits: {
    email: ctx.identity.traits.email,
    name: ctx.identity.traits.name,
    newsletterConsent: ctx.identity.traits.consent.newsletter,
  }
}

missing comma at the end of third line

got it thank you