Exactly what it says, install appeared to run ok, up until the unmount phase then it popped up a warning that the install had failed.
Just reporting in case it’s an issue with the installer that needs fixed.
Starting job "Unmount file systems." ( 48 / 48 )
2022-10-08 - 11:36:05 [6]: Calamares::JobResult unmountTargetMounts(const QString&)
Read 12 entries from "/tmp/calamares-root-13j9mrsj/"
2022-10-08 - 11:36:05 [6]: .. Running ("umount", "-lv", "/tmp/calamares-root-13j9mrsj/var/log")
2022-10-08 - 11:36:05 [6]: .. Target cmd: ("umount", "-lv", "/tmp/calamares-root-13j9mrsj/var/log") Exit code: 32 output:
umount: /tmp/calamares-root-13j9mrsj/var/log: not mounted.
2022-10-08 - 11:36:05 [6]: .. Running ("udevadm", "settle")
2022-10-08 - 11:36:05 [6]: .. Running ("sync")
2022-10-08 - 11:36:05 [1]: void Calamares::ViewManager::onInstallationFailed(const QString&, const QString&)
ERROR: Installation failed: "Could not unmount target system."
2022-10-08 - 11:36:05 [6]: .. - message: "Could not unmount target system."
2022-10-08 - 11:36:05 [6]: .. - details: The device '/dev/sda5' is mounted in the target system. It is mounted at '/tmp/calamares-root-13j9mrsj/var/log'. The device could not be unmounted.
2022-10-08 - 11:36:05 [6]: void Calamares::ViewManager::onInstallationFailed(const QString&, const QString&)
Calamares will quit when the dialog closes.
2022-10-08 - 11:36:05 [6]: QML Component (default slideshow) deactivated
2022-10-08 - 11:36:05 [6]: void Config::doNotify(bool, bool)
Notification not sent; completion: failed
Install Log: https://termbin.com/cgea
HW Info: https://clbin.com/7ZMcD