Why dmesg will log "Failed to start Load kdump kernel"

Hi Everyone
Who know, why dmesg will log below message.

linux-j9oy systemd[1]: Failed to start Load kdump kernel on startup.
linux-j9oy systemd[1]: kdump.service: Unit entered failed state
linux-j9oy systemd[1]: kdump.service: Failed with result ‘exit-code’.

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