For more than a week I get this error. What can I do to "start" again the server and my web app? Please HELP! Thank You!

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I’ve reviewed the latest server logs you’ve provided.

The logs show that your Next.js development server is successfully starting on port 9003. The key sequence is:

  1. Your IDX environment initiates a preview start.
  2. The Next.js dev server is launched with the command: next dev --turbopack -p 9003 --hostname 0.0.0.0 --hostname 0.0.0.0
  3. The server then outputs: ▲ Next.js 15.2.3 (Turbopack) - Local: http://localhost:9003 - Network: http://0.0.0.0:9003 - Environments: .env ✓ Starting... ✓ Ready in 4.3s (at 2025-06-05T08:55:04Z)

The duplicated --hostname 0.0.0.0 in the execution log is still present. As discussed before, while your package.json likely has the correct single --hostname entry in the dev script from our previous adjustments, the duplication might be an artifact of how your IDX environment invokes the script. Crucially, despite this, Next.js is still able to interpret the command and successfully start, as shown by the “✓ Ready” message.

Based purely on these server logs, there isn’t a Next.js startup error within your application code that is preventing the server from reaching a “Ready” state. The server explicitly reports itself as started.

The “trouble starting” you’re perceiving might be related to:

  1. The time it takes for the IDX environment to fully initialize and make the preview available, even after the Next.js server itself is ready.
  2. The multiple restart cycles that IDX might be initiating, which can give the impression of instability.
  3. An issue that occurs after the server has started and you try to access the application (e.g., an error in a React component, a data fetching problem, etc.). These types of errors would typically appear in the browser’s developer console or as new entries in the server logs after a page request.

Since the logs indicate successful server startups from the Next.js application’s perspective, there are no code changes I can propose to fix a startup failure at this moment.

If, after the server reports “✓ Ready,” you are experiencing specific issues such as the application not loading correctly, error messages in your browser, or features not working as expected, please provide details about those specific problems. That would give me more information to help diagnose and potentially fix issues within the application code itself.