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INVALID_PUBLISHABLE_KEY

The publishable key does not exist or was revoked

The pk_ key sent to the browser endpoint is unknown.

http status
401
credits
Nothing is billed for a failed request.

What it means

The browser endpoint POST /api/v1/email/public authenticates with a publishable key in the request body, not a bearer token. Publishable keys are created on the API keys page and stay visible there; revoking one stops its lookups immediately.

What to do

Check the key on the API keys page. The form widget reads it from its data-key attribute; a stale deploy is the usual cause.

Example response 

{
    "success": false,
    "error": {
        "code": "INVALID_PUBLISHABLE_KEY",
        "message": "That publishable key does not exist or was revoked.",
        "request_id": "req_01m1kgdm4xngzmbmff68g94w0c"
    }
}

Every error carries the request_id also sent in the X-Request-Id header; quote it when writing to support.

Related

markdown version: /docs/errors/INVALID_PUBLISHABLE_KEY.md