Could not resolve hostname e: Name or service not known

This error message usually means that the system is unable to resolve the hostname specified in the command or application. The error message "Name or service not known" indicates that either the hostname is incorrect or the DNS server is down.

To troubleshoot this issue, check the spelling of the hostname and verify that it is correct. You can also try pinging the hostname to see if it is reachable.

If the hostname is correct and reachable, then check your DNS configuration and ensure that the DNS server is running and properly configured. You may also need to check your network settings to ensure that your system is properly connected to the network.