MacBook Pro 2018 overheat /HibernateError during sleep

Hey

Yesterday, after playing with my MacBook's pmset settings, I closed the lid (while plugged in), and after 4 hours I just unplugged it and went to sleep. This morning I'm waking up to an extremely hot, battery drained (3%) MacBook. I immediately plugged it to the charger and opened the lid to help it cool down.

After a couple minutes, I was curious to why he won't sleep during the night, so I ran

and this is what I've found out:

2018-09-07 22:59:09 +0300 DarkWake DarkWake from Standby [CDN] due to /HibernateError: Using BATT (Charge:100%) 6 secs

2018-09-07 22:59:21 +0300 DarkWake DarkWake from Standby [CDN] due to /HibernateError: Using BATT (Charge:100%) 6 secs

2018-09-07 22:59:32 +0300 DarkWake DarkWake from Standby [CDN] due to /HibernateError: Using BATT (Charge:100%) 7 secs

...

2018-09-08 07:10:13 +0300 DarkWake DarkWake from Standby [CDN] due to /HibernateError: Using BATT (Charge:4%) 8 secs

2018-09-08 07:10:26 +0300 DarkWake DarkWake from Standby [CDN] due to /HibernateError: Using BATT (Charge:3%) 6 secs

2018-09-08 07:10:37 +0300 DarkWake DarkWake from Standby [CDN] due to /HibernateError: Using BATT (Charge:3%) 7 secs

Notice the time, and more importantly the cause - "HibernateError".

This is my pmset:

$ pmset -g custom

Battery Power:

lidwake 0

autopoweroff 0

autopoweroffdelay 600

standbydelay 600

standby 1

ttyskeepawake 0

hibernatemode 0

gpuswitch 2

powernap 0

hibernatefile /var/vm/sleepimage

displaysleep 1

sleep 1

tcpkeepalive 0

halfdim 1

acwake 0

lessbright 1

disksleep 1

AC Power:

lidwake 0

autopoweroff 0

autopoweroffdelay 600

standbydelay 3600

standby 1

ttyskeepawake 0

hibernatemode 0

powernap 0

gpuswitch 2

hibernatefile /var/vm/sleepimage

displaysleep 5

womp 0

networkoversleep 0

sleep 5

tcpkeepalive 0

halfdim 0

acwake 0

disksleep 5

I think that what have may caused it was the fact that I closed the lid while it was plugged, went for 4 hours (during that time my MacBook went into standby mode), and then just unplugging it. I think that if I were to open the lid after unplugging it, and letting it go to standby when on battery power, this wouldn't have happen.

I'm also worried about any hardware damage (mainly the battery, due to deep discharge and heating). Am I worrying for nothing?

I couldn't find something about this error on Google, so I decided to ask here, as it seems like a place where I could get good help.

Thank you very much for reading, John.