Apr 12 15:47:47 ubuntu4 systemd[1]: Starting Reboot via kexec...
Apr 12 15:47:47 ubuntu4 systemctl[1245]: Cannot find the ESP partition mount point.
Apr 12 15:47:47 ubuntu4 systemd[1]: systemd-kexec.service: Main process exited, code=exited, status=1/FAILURE
Apr 12 15:47:47 ubuntu4 systemd[1]: systemd-kexec.service: Failed with result 'exit-code'.
Apr 12 15:47:47 ubuntu4 systemd[1]: Failed to start Reboot via kexec.