My laptop regularly goes to sleep at 4 AM and doesn’t wake up unless I do a hard reboot. Can you help me understand the logs?

Once in a while I wake up to see my laptop stuck in an unrecoverable state. The screen is off, power led is blinking and it does not respond to any key press. The only way i can recover is by a hard reboot. If the laptop is not connected to the network, it normally shows a time around 4am. Checking journalctl -r I see that the laptop entered suspend state at 4:13 and rebooted at 4:49

Apr 17 04:49:35 dyumnin kernel: BIOS-e820: [mem 0x0000000009a00000-0x0000000009dfffff] reserved
Apr 17 04:49:35 dyumnin kernel: BIOS-e820: [mem 0x0000000000100000-0x00000000099fffff] usable
Apr 17 04:49:35 dyumnin kernel: BIOS-e820: [mem 0x000000000009f000-0x00000000000bffff] reserved
Apr 17 04:49:35 dyumnin kernel: BIOS-e820: [mem 0x0000000000000000-0x000000000009efff] usable
Apr 17 04:49:35 dyumnin kernel: BIOS-provided physical RAM map:
Apr 17 04:49:35 dyumnin kernel:   zhaoxin   Shanghai  
Apr 17 04:49:35 dyumnin kernel:   Centaur CentaurHauls
Apr 17 04:49:35 dyumnin kernel:   Hygon HygonGenuine
Apr 17 04:49:35 dyumnin kernel:   AMD AuthenticAMD
Apr 17 04:49:35 dyumnin kernel:   Intel GenuineIntel
Apr 17 04:49:35 dyumnin kernel: KERNEL supported cpus:
Apr 17 04:49:35 dyumnin kernel: Command line: BOOT_IMAGE=/boot/vmlinuz-6.8.0-57-generic root=UUID=c3f90ee0-94ff-4dc5-8851-3a1279c99344 ro acpi_osi=Linux acpi_backlight=Vendor quiet splash
Apr 17 04:49:35 dyumnin kernel: Linux version 6.8.0-57-generic (buildd@lcy02-amd64-040) (x86_64-linux-gnu-gcc-13 (Ubuntu 13.3.0-6ubuntu2~24.04) 13.3.0, GNU ld (GNU Binutils for Ubuntu) 2.42) #59-Ubuntu SMP PREEMPT_DYNAMIC Sat Mar 15 17:40:59 UTC 2025 (Ubuntu 6.8.0-57.59-generic 6.8.12)
-- Boot 10cd9b2b244b47a788812c4df8ac307a --
Apr 17 04:13:29 dyumnin kernel: PM: suspend entry (s2idle)
Apr 17 04:13:29 dyumnin systemd-sleep: Performing sleep operation 'suspend'...
Apr 17 04:13:29 dyumnin wpa_supplicant: nl80211: deinit ifname=wlo1 disabled_11b_rates=0
Apr 17 04:13:29 dyumnin wpa_supplicant: wlo1: CTRL-EVENT-DSCP-POLICY clear_all
Apr 17 04:13:29 dyumnin systemd: Starting systemd-suspend.service - System Suspend...
Apr 17 04:13:29 dyumnin systemd: Reached target sleep.target - Sleep.

My inference is either 1. It is going to sleep at 4:13, tries to wakeup at 4:49 (why?) and hangs in the process OR 2. It sleeps at 4:13 hangs at 4:49 and is stuck in that state until I force a hard reboot. The complete log is at https://pastebin.com/dF0kgr67 My OS distribution is

Linux dyumnin 6.8.0-57-generic #59-Ubuntu SMP PREEMPT_DYNAMIC Sat Mar 15 17:40:59 UTC 2025 x86_64 x86_64 x86_64 GNU/Linux
                                                                                                                                                                                                                                                                                                                                                                                                               
No LSB modules are available.
Distributor ID:	Linuxmint
Description:	Linux Mint 22.1
Release:	22.1
Codename:	xia

Hardware is Acer A15-41 **Edit 1** I am not sure why it goes for sleep at that specific time. I normally go to sleep at midnight and I do not have any cron jobs that run at 4 am. my crontab is

*/5 * * * * pkill offlineimap ;sleep 1;offlineimap -f INBOX