My Mac goes in hibernate, not in sleep mode

Hello everyone
When my Mac is connected with the charger and I put him in sleep-mode, my Mac works, but after a couple of hours, it goes in hibernate.
Why? What should I do to solve this problem?
I don't have this problem when my MacBook Pro is disconnected from the charger.
I think the problem is in the image above.

A recent update for late-model notebooks caused them to go into hibernation after a certain amount of time in sleep on AC power. I believe it was to comply with an EU regulatory requirement.

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