Fixing Rails Server Startup Issues After Installing MySQL@5.7

Discover how to resolve Rails server startup issues after installing MySQL 5.7. Follow our step-by-step guide to fix the `LoadError` problem.
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This error occurs because your Rails application is still attempting to link to the old MySQL library, which is no longer available after your uninstall. Fortunately, there's a straightforward solution to this problem.

Understanding the Cause of the Error

Steps to Resolve the Error

To resolve this issue, you need to uninstall the existing mysql2 gem and reinstall it to ensure compatibility with your new MySQL version. Here’s how to do it:

1. Uninstall the Old mysql2 Gem

Open your terminal and run the following command:

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This command removes the mysql2 gem that was built against your old MySQL version, clearing the way for a fresh installation.

2. Reinstall the mysql2 Gem

After uninstalling the old gem, you will need to reinstall it. You can do this by navigating to your Rails project directory and running:

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Conclusion

By following these simple steps, you should be able to resolve the LoadError and successfully start your Rails server without any issues related to your new MySQL installation. Always ensure that you're using the correct versions of your dependencies to avoid compatibility issues in the future.

If you encounter any other problems or have questions, feel free to reach out to the community or check official documentation for assistance. Happy coding!