Powertop can't read saved_parameters.powertop

[Gapoly]

Hello, H have Powertop and calibrated it with sudo powertop -c then rebooted to see it would start automatically (I already done sudo systemctl enable powertop way before. When I did a sudo systemctl status powertop` I get :

sudo systemctl status powertop                                                                                                         ✔  15:15:37  ▓▒░
○ powertop.service - Extend the battery life of laptop
     Loaded: loaded (/etc/systemd/system/powertop.service; enabled; preset: disabled)
     Active: inactive (dead) since Wed 2025-09-03 15:14:36 CEST; 1min 7s ago
 Invocation: ae1672b75b914c01b0a9089c9f4f1c13
    Process: 837 ExecStart=/usr/sbin/powertop --auto-tune (code=exited, status=0/SUCCESS)
   Main PID: 837 (code=exited, status=0/SUCCESS)
   Mem peak: 79.1M
        CPU: 3.290s

sept. 03 15:14:19 lenoarch2025 powertop[837]: glob returned GLOB_ABORTED
sept. 03 15:14:34 lenoarch2025 powertop[837]: Leaving PowerTOP
sept. 03 15:14:36 lenoarch2025 powertop[837]: Cannot load from file /var/cache/powertop/saved_parameters.powertop
sept. 03 15:14:36 lenoarch2025 powertop[837]: File will be loaded after taking minimum number of measurement(s) with battery only
sept. 03 15:14:36 lenoarch2025 powertop[837]: Cannot load from file /var/cache/powertop/saved_parameters.powertop
sept. 03 15:14:36 lenoarch2025 powertop[837]: File will be loaded after taking minimum number of measurement(s) with battery only
sept. 03 15:14:36 lenoarch2025 powertop[837]: To show power estimates do 188 measurement(s) connected to battery only
sept. 03 15:14:36 lenoarch2025 systemd[1]: powertop.service: Deactivated successfully.
sept. 03 15:14:36 lenoarch2025 systemd[1]: Finished Extend the battery life of laptop.
sept. 03 15:14:36 lenoarch2025 systemd[1]: powertop.service: Consumed 3.290s CPU time, 79.1M memory peak.

Apparently it cannot see /var/cache/powertop/saved_parameters.powertop. I checked, the file exists with root:root and -rw-r--r--. I don't understand why it can't load the file.