Troubleshootingtroubleshooting / localhost

Localhost Issues

What this is

This page helps when the learner cannot open the project on localhost.

The usual checkpoint is:

Checkpoint

http://localhost:3000

Why it matters

If localhost does not work, the learner should not build features yet.

Localhost is the first proof that the project setup is healthy.

What to do

  1. Restart the IDE.
  2. Check that Node.js is installed.
  3. Open the correct project folder.
  4. Open the IDE terminal.
  5. Run the project command again.
  6. Read the terminal output.

Use this prompt:

Copy prompt
My localhost is not working.

Here is my terminal output:
[paste output]

Help me fix only the next step.

Common mistakes

  • Running commands in the wrong folder.
  • Ignoring terminal errors.
  • Opening the wrong localhost URL.
  • Continuing to build features while setup is broken.

Next step

Go to Errors.