Ps4 indicates that I have not turned off the Ps4 2 ×?

I know that you do not pull the plug in the Ps4 AND I do not synonymous. Lately, I have it properly shut down on ps4 shut down and did not even look at the plug! And next day is there I should not pull the plug? I have not and this message has already come 2 times? I do not think I had a power failure because I noticed that…

Maybe your parents have something unplugged, sometimes
Or if it hangs on a power strip, the spider might