Failed to create scheduled instance backup: EPERM: operation not permitted, copyfile ...
### Current Situation

I'm trying to setup scheduled backup to a network drive (cifs with automount).
I can see the backups from settings/backup if I manually save there.
Full message I get is this: _Failed to create scheduled instance backup: EPERM: operation not permitted, copyfile '/tmp/homebridge-backup-Yp5NIl/homebridge-backup-0E5C9B6D7E59.1735434800089.tar.gz' -> '/mnt/Fritz/homebridge/homebridge-backup-0E5C9B6D7E59.1735434801024.tar.gz'_

Backup file is still on tmp folder, so I did try manually with same parameters and it works. 
Backup is visible. Only autobackup do not works.
_pi@raspberrypi:/tmp $ sudo -u homebridge cp /tmp/homebridge-backup-Yp5NIl/homebridge-backup-0E5C9B6D7E59.1735434800089.tar.gz /mnt/Fritz/homebridge/homebridge-backup-0E5C9B6D7E59.1735434801024.tar.gz
pi@raspberrypi:/tmp $_ 

I'm going to try to update UI in the while

### Logs

[29/12/2024, 01:13:20] [Homebridge UI] Running scheduled instance backup...
[29/12/2024, 01:13:20] [Homebridge UI] Creating temporary backup archive at /tmp/homebridge-backup-Yp5NIl/homebridge-backup-0E5C9B6D7E59.1735434800089.tar.gz
[29/12/2024, 01:13:27] [Homebridge UI] Failed to create scheduled instance backup: EPERM: operation not permitted, copyfile '/tmp/homebridge-backup-Yp5NIl/homebridge-backup-0E5C9B6D7E59.1735434800089.tar.gz' -> '/mnt/Fritz/homebridge/homebridge-backup-0E5C9B6D7E59.1735434801024.tar.gz'

### Config

_No response_

### Homebridge UI Version

v4.65.0 

### Homebridge Version

v1.8.5

### Node.js Version

v22.12.0

### Operating System

Raspberry Pi OS / Raspbian

### Environment Info

None

### Raspberry Pi Model

Raspberry Pi 3 B+