Fixing the npm start Error in React: Downgrade Node.js to LTS Version

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Troubleshooting the npm start Error in Your React Project

If you’re an aspiring developer working with React, you may have come across a frustrating error when trying to run your application using the command npm start. This error can hinder your progress, leaving you confused about how to move forward. In this guide, we will address this common issue and provide a straightforward solution to get you back on track.

The Problem: Understanding the Error

When executing npm start, you might receive an error message resembling the following:

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Along with that, you might also see a corresponding message in your browser stating: "The site can't be reached. localhost refused to connect."

Step 1: Install nvm (if not already installed)

If you haven’t installed nvm yet, you can do so by executing the following command in your terminal:

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Be sure to follow any further instructions that appear in the terminal to complete your installation.

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Identify the most recent LTS version (for example, v16.x.x) from the list and run the following command:

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Step 4: Use the Installed Version

After the installation is complete, set the newly installed version as the default version for your terminal:

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Step 5: Verify the Installation

To confirm that you are now using the correct version, run the following command in your terminal:

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You should see output indicating that you are running a version starting with v16.

Step 6: Restart Your Application

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Your React application should now start without any issues.

Conclusion

If you encounter any further issues or have questions, feel free to leave a comment below! Happy coding!