The model text-davinci-003 has been deprecated, learn more here: https://platform.openai.com/docs/deprecations

[TheKnarf]

// ...
  data: {
    error: {
      message: 'The model `text-davinci-003` has been deprecated, learn more here: https://platform.openai.com/docs/deprecations',
      type: 'invalid_request_error',
      param: null,
      code: 'model_not_found'
    }
  }

[ShivamIgnite]

Please use gpt-3.5-turbo atleast, and some command to change models