The kernel power manager has initiated a shutdown transition. Shutdown Reason: Kernel API

Hi, so I left my laptop on while I was sleeping. When I wake up my laptop suddenly plays a video from YouTube. Strangely, my laptop shows the lock screen. I then checked the EventViewer and it had this event. What does it mean? And also i checked BlueScreenView and there's no blue screen. Sorry if my English are bad

Log Name:      System

Source:        Microsoft-Windows-Kernel-Power

Date:          11/13/20 03:59:06 AM

Event ID:      109

Task Category: (103)

Level:         Information

Keywords:      (70368744177664),(1024),(4)

User:          N/A

Computer:      LAPTOP-MJ22S108

Description:

The kernel power manager has initiated a shutdown transition.

Shutdown Reason: Kernel API

Event Xml:

<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">

<System>

<Provider Name="Microsoft-Windows-Kernel-Power" Guid="{331c3b3a-2005-44c2-ac5e-77220c37d6b4}" />

<EventID>109</EventID>

<Version>0</Version>

<Level>4</Level>

<Task>103</Task>

<Opcode>0</Opcode>

<Keywords>0x8000400000000404</Keywords>

<TimeCreated SystemTime="2020-11-12T20:59:06.2090930Z" />

<EventRecordID>9795</EventRecordID>

<Correlation />

<Execution ProcessID="1172" ThreadID="1176" />

<Channel>System</Channel>

<Computer>LAPTOP-MJ22S108</Computer>

<Security />

</System>

<EventData>

<Data Name="ShutdownActionType">5</Data>

<Data Name="ShutdownEventCode">0</Data>

<Data Name="ShutdownReason">5</Data>

</EventData>

</Event>