What does it mean when the Ubuntu Server Installation halts during the execution of the curtin command in-target?

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When the Ubuntu Server Installation halts during the execution of the curtin command in-target, it typically means that the installer has encountered an error or a problem. This could be caused by a variety of factors, such as hardware issues, compatibility problems, configuration errors, or software bugs.

To diagnose and resolve the issue, you may need to review the installation logs and debug information, consult the Ubuntu Server documentation and forums, seek help from experienced users or administrators, or contact technical support. Some common troubleshooting steps may include checking your hardware and system requirements, verifying your installation media, selecting different configurations or options, or restarting the installation process.