The error message Errno 14 - HTTP Error 404 - Not Found indicates that the repository or package you're trying to access is not available at the specified URL.

In this case, it seems like you're trying to access the EPEL (Extra Packages for Enterprise Linux) repository from a mirror hosted by Leaseweb, but it's returning a 404 error, which means the file or resource you're trying to access does not exist on the server.

Here are some steps you can take to address this issue:

1. Check the URL:

   • Verify that the URL is correct. Sometimes, a typo in the URL can lead to this error.

2. Use a Different Mirror:

   • Try using a different mirror for the EPEL repository. You can find a list of mirrors on the official EPEL website.

3. Update the Repository Configuration:

   • If you're using a package manager like yum or dnf, ensure that the repository configuration file for EPEL is correctly set up. The file is typically located in /etc/yum.repos.d/.

4. Clear the Yum/DNF Cache:

   • Sometimes, cached information can cause issues. Clear the cache using the following command:

     bash

or

4. • sudo dnf clean all

5. Verify Internet Connectivity:

   • Ensure that your server has a working internet connection. The error can also occur if the server cannot reach the specified mirror.

6. Wait and Retry:

   • It's possible that the mirror is temporarily unavailable. You can wait for some time and then try again.

7. Check Mirror Status:

   • Visit the mirror's website or check with the mirror provider to see if there are any known issues or maintenance activities that might be affecting access.

8. Use the Default EPEL Mirror:

   • If you're having trouble with a specific mirror, you can try using the default EPEL mirror. Update your repository configuration to use the base EPEL mirror URL.

Remember to always back up your configuration files before making any significant changes. This way, you can easily revert to a working state if any issues arise during the troubleshooting process.