Extract not working in node SDK

      const extractResult = await firecrawlClient.extract({
        urls: [url],
        prompt: `Extract all information as per the schema provided on this entity ${url}`,
        scrapeOptions: {
          formats: [{ type: "json", schema: z.toJSONSchema(schema) }],
        },
      });

{
  success: true,
  data: {},
  status: 'completed',
  expiresAt: '2026-01-21T13:21:37.000Z',
  tokensUsed: 300,
  creditsUsed: 20
}