Why does the computer not turn off and give an error?

Question

linux

Why does the computer not turn off and give an error?
I turn off my computer and it won't turn off. It pops up on the screen.

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INFO: task systemd-shutdow:1 block for more than 120 seconds.
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"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
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Answer 1

Yes, it does not turn off and gives an error. Something went wrong (s)