api/generate is facing 405 error

[howdyfrom2019]

Hi, I deployed my novel project with vercel link you provided and figure it out that text generation doesn't work.
I set up all project in local environment and I found an error like below.

Do you happened to know that I have to subscribe any plans for testing novel?

error - Error: Response error: {
    "error": {
        "message": "You exceeded your current quota, please check your plan and billing details.",
        "type": "insufficient_quota",
        "param": null,
        "code": "insufficient_quota"
    }
}

    at Object.eval (webpack-internal:///(middleware)/./node_modules/ai/dist/index.mjs:137:32)
    at Generator.next (<anonymous>)
    at fulfilled (webpack-internal:///(middleware)/./node_modules/ai/dist/index.mjs:42:24)
    at process.processTicksAndRejections (node:internal/process/task_queues:95:5)

[steven-tey]

Probably cause the OpenAI API key you added ran out of OpenAI credits. Closing this since it's unrelated to Novel.